Ubuntu14.04 wifi Realtek RTL8723BE disconnect issues

**viahj** · August 16th, 2014

Lenovo Flex 2, Realtek RTL8723BE wifi adapter random disconnect issues. Also my router has a 5GHz band but Ubuntu can't see it (can't find info about whether the Realtek is 5GHz compatible).

Code:

viahj@viahj-lenovo:~$ iwlist wlan0 channel
wlan0     13 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Current Frequency:2.437 GHz (Channel 6)

Code:

Linux viahj-lenovo 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

***** lsb_release *****

Distributor ID:    Ubuntu
Description:    Ubuntu 14.04.1 LTS
Release:    14.04
Codename:    trusty

***** lspci *****

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    Subsystem: Lenovo Device [17aa:b736]
    Kernel driver in use: rtl8723be
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo Device [17aa:3810]
    Kernel driver in use: r8169

***** lsusb *****

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 03eb:8a1b Atmel Corp. 
Bus 001 Device 003: ID 0bda:b728 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 13d3:5727 IMC Networks 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

***** PCMCIA Card Info *****


***** iwconfig *****

wlan0     IEEE 802.11bgn  ESSID:"belkin.viahj"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: <MAC address removed>   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-18 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:6   Missed beacon:0


***** rfkill *****

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: yes
    Hard blocked: no
3: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
4: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

***** lsmod *****

rtl8723be              85118  0 
btcoexist              50304  1 rtl8723be
rtl8723_common         23361  1 rtl8723be
rtl_pci                26690  1 rtl8723be
rtlwifi                63475  2 rtl_pci,rtl8723be
mac80211              630653  3 rtl_pci,rtlwifi,rtl8723be
cfg80211              484040  2 mac80211,rtlwifi
wmi                    19177  0 

***** nm-tool *****

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        <MAC address removed>

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off


- Device: wlan0  [belkin.viahj] ------------------------------------------------
  Type:              802.11 WiFi
  Driver:            rtl8723be
  State:             connected
  Default:           yes
  HW Address:        <MAC address removed>

  Capabilities:
    Speed:           72 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    ATTjPCiFi2:      Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 70 WPA WPA2
    DIRECT-aE-BRAVIA:Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 94 WPA2
    sheridan:        Infra, <MAC address removed>, Freq 2422 MHz, Rate 54 Mb/s, Strength 60 WPA2
    2WIRE589:        Infra, <MAC address removed>, Freq 2432 MHz, Rate 54 Mb/s, Strength 84 WPA WPA2
    Virus:           Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 40 WPA2
    Airport:         Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 77 WPA2
    ATT9jpidbA:      Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 28 WPA WPA2
    CVRM:            Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 60 WPA
    SHENG:           Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 54 WPA WPA2
    ATTSqYrxtA:      Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 77 WPA WPA2
    Trojan Virus Installer: Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 54 WPA2
    nancynolte's Network: Infra, <MAC address removed>, Freq 2417 MHz, Rate 54 Mb/s, Strength 54 WPA2
    *belkin.viahj:   Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 100 WPA WPA2
    DARLA-PC_Network:Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 84 WPA2
    SHENG-guest:     Infra, <MAC address removed>, Freq 2462 MHz, Rate 54 Mb/s, Strength 60
    DG860A22:        Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 40 WPA2
    linksys:         Infra, <MAC address removed>, Freq 2437 MHz, Rate 54 Mb/s, Strength 54
    2WIRE021:        Infra, <MAC address removed>, Freq 2422 MHz, Rate 54 Mb/s, Strength 100 WPA WPA2
    2WIRE128:        Infra, <MAC address removed>, Freq 2412 MHz, Rate 54 Mb/s, Strength 44 WPA WPA2
    REVOLUTION:      Infra, <MAC address removed>, Freq 2417 MHz, Rate 54 Mb/s, Strength 47 WPA2

  IPv4 Settings:
    Address:         192.168.2.13
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.2.1

    DNS:             192.168.2.1



***** NetworkManager.state *****
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

***** NetworkManager.conf *****

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

no-auto-default=<MAC address removed>,

[ifupdown]
managed=false

***** interfaces *****

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

***** iwlist *****

wlan0     Scan completed :
          Cell 01 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=70/70  Signal level=-26 dBm  
                    Encryption key:on
                    ESSID:"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000000bbfcce1d5
                    Extra: Last beacon: 108ms ago
                    IE: Unknown: 000C000000000000000000000000
                    IE: Unknown: 010882840B162430486C
                    IE: Unknown: 030106
                    IE: Unknown: 050400030000
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD0E0050F204104A0001101044000102
                    IE: Unknown: DD090010180202F0040000
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 02 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=70/70  Signal level=-22 dBm  
                    Encryption key:on
                    ESSID:"belkin.viahj"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000000b9b0e3499
                    Extra: Last beacon: 616236ms ago
                    IE: Unknown: 000C62656C6B696E2E766961686A
                    IE: Unknown: 010882840B162430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DDA20050F204104A00011010440001021041000100103B00010310470010A4555BA025560C03C4953298337194DF1021001442656C6B696E20496E7465726E6174696F6E616C1023000A46394B3131303220763110240007312E30302E31391042000E31323131353247463130303038361054000800060050F20400011011001D42656C6B696E204E363030444220576972656C65737320526F75746572100800020084
                    IE: Unknown: DD090010180202F0040000
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 03 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"ATTSqYrxtA"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000d2a20ae2a8
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000A41545453715972787441
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606081500000000000000000000000000000000000000
                    IE: Unknown: DD090010180201F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 04 - Address: <MAC address removed>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=62/70  Signal level=-48 dBm  
                    Encryption key:on
                    ESSID:"ATTjPCiFi2"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000002633936bc5f
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000A4154546A504369466932
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601081500000000000000000000000000000000000000
                    IE: Unknown: DD090010180204F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 05 - Address: <MAC address removed>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"2WIRE128"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000003a408dc5181
                    Extra: Last beacon: 4196ms ago
                    IE: Unknown: 00083257495245313238
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030101
                    IE: Unknown: 050400010000
                    IE: Unknown: 0706555320010B1B
                    IE: Unknown: 2A0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32043048606C
          Cell 06 - Address: <MAC address removed>
                    Channel:3
                    Frequency:2.422 GHz (Channel 3)
                    Quality=56/70  Signal level=-54 dBm  
                    Encryption key:on
                    ESSID:"sheridan"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000001778de4a177
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 0008736865726964616E
                    IE: Unknown: 010882840B162430486C
                    IE: Unknown: 030103
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 0B050100180000
                    IE: Unknown: 2D1AAD1917FFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1603081500000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F080500080000000040
                    IE: Unknown: DD7A0050F204104A0001101044000102103B00010310470010D305D5A604A6BF496C11A282E366ECCE1021000D4E4554474541522C20496E632E1023000552373030301024000552373030301042000233321054000800060050F2040001101100055237303030100800022008103C0001031049000600372A000120
                    IE: Unknown: DD090010180201001C0000
                    IE: Unknown: DD180050F2020101880003A4000027A400004243BC0062326600
                    IE: Unknown: 46057200010000
                    IE: Unknown: DD1E00904C0408BF0CB259820FEAFF0000EAFF0000C0050003000000C3020002
          Cell 07 - Address: <MAC address removed>
                    Channel:2
                    Frequency:2.417 GHz (Channel 2)
                    Quality=42/70  Signal level=-68 dBm  
                    Encryption key:on
                    ESSID:"nancynolte's Network"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000bef552cb8fa
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 00146E616E63796E6F6C74652773204E6574776F726B
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030102
                    IE: Unknown: 0706555320010B1E
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1AAD511BFFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D1602000000000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0700039301750320
                    IE: Unknown: DD070017F203020180
                    IE: Unknown: DD0E0017F2070001010628CFDABA8073
          Cell 08 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=44/70  Signal level=-66 dBm  
                    Encryption key:on
                    ESSID:"CVRM"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000011b876b2dd
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 00044356524D
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: Unknown: 32040C121860
                    IE: Unknown: DD06001018020004
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
          Cell 09 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=69/70  Signal level=-41 dBm  
                    Encryption key:on
                    ESSID:"DIRECT-aE-BRAVIA"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000bbfa952f0
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 00104449524543542D61452D425241564941
                    IE: Unknown: 01088C129824B048606C
                    IE: Unknown: 030106
                    IE: Unknown: 2A0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1A2C011BFFFF000000000000000000000100000000000000000000
                    IE: Unknown: 3D1606000000000000000000000000000000000000000000
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD8B0050F204104A0001101044000102103B0001031047001000000000000010108000D8D43C3DA65010210010536F6E7920436F72706F726174696F6E1023000B536F6E7920425241564941102400013010420001301054000800070050F204000110110012425241564941205842522D35355838353041100800020000103C0001011049000600372A000120
          Cell 10 - Address: <MAC address removed>
                    Channel:5
                    Frequency:2.432 GHz (Channel 5)
                    Quality=60/70  Signal level=-50 dBm  
                    Encryption key:on
                    ESSID:"2WIRE589"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000ef3b66f181
                    Extra: Last beacon: 600ms ago
                    IE: Unknown: 00083257495245353839
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030105
                    IE: Unknown: 050400010000
                    IE: Unknown: 0706555320010B1B
                    IE: Unknown: 2A0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32043048606C
          Cell 11 - Address: <MAC address removed>
                    Channel:2
                    Frequency:2.417 GHz (Channel 2)
                    Quality=40/70  Signal level=-70 dBm  
                    Encryption key:on
                    ESSID:"REVOLUTION"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000d83af02d80
                    Extra: Last beacon: 3832ms ago
                    IE: Unknown: 000A5245564F4C5554494F4E
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030102
                    IE: Unknown: 050401020000
                    IE: Unknown: 2A0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32043048606C
                    IE: Unknown: DD180050F2020101820003A4000027A4000042435E0062322F00
                    IE: Unknown: DD1E00904C334E101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 2D1A4E101BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: DD1A00904C3402080800000000000000000000000000000000000000
                    IE: Unknown: 3D1602080800000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD0A00037F04010002004000
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 12 - Address: <MAC address removed>
                    Channel:3
                    Frequency:2.422 GHz (Channel 3)
                    Quality=42/70  Signal level=-68 dBm  
                    Encryption key:on
                    ESSID:"2WIRE021"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000023ea050b3cd
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 00083257495245303231
                    IE: Unknown: 010882848B0C12961824
                    IE: Unknown: 030103
                    IE: Unknown: 0706555320010B1B
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
          Cell 13 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"DARLA-PC_Network"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000589a9e180
                    Extra: Last beacon: 460ms ago
                    IE: Unknown: 00104441524C412D50435F4E6574776F726B
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030106
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
                    IE: Unknown: 32043048606C
                    IE: Unknown: DD180050F2020101020003A4000027A4000042435E0062322F00
                    IE: Unknown: 2D1A4C101BFF00000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606001900000000000000000000000000000000000000
                    IE: Unknown: DD0900037F01010000FF7F
                    IE: Unknown: DD0A00037F04010000000000
                    IE: Unknown: DD0E0050F204104A0001101044000102
          Cell 14 - Address: <MAC address removed>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"DG860A22"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000002e355bd215a
                    Extra: Last beacon: 480ms ago
                    IE: Unknown: 00084447383630413232
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030106
                    IE: Unknown: 32040C183060
                    IE: Unknown: 070C55532001010F0209110B010F
                    IE: Unknown: 33082001020304050607
                    IE: Unknown: 33082105060708090A0B
                    IE: Unknown: 05040001002C
                    IE: Unknown: DD310050F204104A0001101044000102104700102880288028801880A880001DD1BD4720103C0001011049000600372A000120
                    IE: Unknown: 2A0106
                    IE: Unknown: 2D1A6C0017FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1606000500000000000000000000000000000000000000
                    IE: Unknown: 7F0101
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 0B05010026127A
                    IE: Unknown: DD07000C4303000000
          Cell 15 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=60/70  Signal level=-50 dBm  
                    Encryption key:on
                    ESSID:"ATT9jpidbA"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000263e0f8c863
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000A415454396A7069646241
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0100
                    IE: Unknown: 2F0100
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1A7C181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B081500000000000000000000000000000000000000
                    IE: Unknown: DD090010180201F02C0000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 16 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=56/70  Signal level=-54 dBm  
                    Encryption key:on
                    ESSID:"Airport"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000ef3d02c956
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 0007416972706F7274
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 0706555320010B1E
                    IE: Unknown: 200100
                    IE: Unknown: 23021400
                    IE: Unknown: 2A0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AAD1917FFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D160B081500000000000000000000000000000000000000
                    IE: Unknown: 7F080000000000000040
                    IE: Unknown: DD0B0017F20100010100000007
                    IE: Unknown: DD0700039301780320
                    IE: Unknown: DD0E0017F20700010106907240156F89
                    IE: Unknown: DD090010180201001C0000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 46050200010000
          Cell 17 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=40/70  Signal level=-70 dBm  
                    Encryption key:on
                    ESSID:"SHENG"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000002fe37cb7e
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 00055348454E47
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD7F0050F204104A00011010440001021041000100103B00010310470010946397838CE48DA590AC4FFDF9A08B0810210005436973636F1023000D4C696E6B7379732045323530301024000776312E302E30331042000234321054000800060050F20400011011000D4C696E6B737973204532353030100800020084103C000103
                    IE: Unknown: DD090010180204F0040000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 18 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=42/70  Signal level=-68 dBm  
                    Encryption key:off
                    ESSID:"SHENG-guest"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000002fe37f88f
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 000B5348454E472D6775657374
                    IE: Unknown: 010882848B962430486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: Unknown: 32040C121860
                    IE: Unknown: 2D1AFC181BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080400000000000000000000000000000000000000
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: 7F0101
                    IE: Unknown: DD090010180204F0040000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 19 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=54/70  Signal level=-56 dBm  
                    Encryption key:on
                    ESSID:"Virus"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000037f2c119c
                    Extra: Last beacon: 36ms ago
                    IE: Unknown: 00055669727573
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32080C1218243048606C
                    IE: Unknown: 2D1ABD1817FFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080400000000000000000000000000000000000000
                    IE: Unknown: DD180050F204104A00011010440001021049000600372A000120
                    IE: Unknown: DD090010180205001C0000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 20 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=62/70  Signal level=-48 dBm  
                    Encryption key:on
                    ESSID:"Virus"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000037f217d97
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 00055669727573
                    IE: Unknown: 010482848B96
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 32080C1218243048606C
                    IE: Unknown: 2D1ABD1817FFFFFF0000000000000000000000000000000000000000
                    IE: Unknown: 3D160B080400000000000000000000000000000000000000
                    IE: Unknown: DD770050F204104A0001101044000102103B000103104700100E03EAA012247CEF9233FA57A138A07F102100045562656510230004556265651024000631323334353610420007303030303030311054000800060050F204000110110006556265654150100800022008103C0001011049000600372A000120
                    IE: Unknown: DD090010180205001C0000
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
          Cell 21 - Address: <MAC address removed>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=70/70  Signal level=-24 dBm  
                    Encryption key:on
                    ESSID:"Trojan Virus Installer"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000bbfbed9ee
                    Extra: Last beacon: 8ms ago
                    IE: Unknown: 001654726F6A616E20566972757320496E7374616C6C6572
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 03010B
                    IE: Unknown: 0706555320010B1E
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 2D1AAD511BFFFF000000000000000000000000000000000000000000
                    IE: Unknown: 33027734
                    IE: Unknown: 3D160B080400000000000000000000000000000000000000
                    IE: Unknown: 46050200010000
                    IE: Unknown: DD180050F2020101010003A4000027A4000042435E0062322F00
                    IE: Unknown: DD0700039301730B20
                    IE: Unknown: DD0E0017F20700010106AC7F3EEAD27A
                    IE: Unknown: DD0B0017F20100010100000007


***** resolv.conf *****

nameserver 127.0.1.1
search belkin

***** blacklist *****

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

[/etc/modprobe.d/fbdev-blacklist.conf]
blacklist arkfb
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist cirrusfb
blacklist cyber2000fb
blacklist gx1fb
blacklist gxfb
blacklist kyrofb
blacklist matroxfb_base
blacklist mb862xxfb
blacklist neofb
blacklist nvidiafb
blacklist pm2fb
blacklist pm3fb
blacklist s3fb
blacklist savagefb
blacklist sisfb
blacklist tdfxfb
blacklist tridentfb
blacklist viafb
blacklist vt8623fb

***** modinfo *****

rtl8723be
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be/rtl8723be.ko
firmware:       rtlwifi/rtl8723befw.bin
srcversion:     0D59E0301AAA6E5A93400BB
depends:        rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
parm:           swlps:bool
parm:           swenc:using hardware crypto (default 0 [hardware])
parm:           ips:using no link power save (default 1 is open)
parm:           fwlps:using linked fw control power save (default 1 is open)
parm:           msi:Set to 1 to use MSI interrupts mode (default 0)
parm:           debug:Set debug level (0-5) (default 0) (int)

btcoexist
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/btcoexist/btcoexist.ko
srcversion:     3CC61E00E2CEF446293F879
depends:        

rtl8723_common
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723com/rtl8723-common.ko
srcversion:     D1807280DBDC9B8A7EBDAB7
depends:        

rtl_pci
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtl_pci.ko
srcversion:     D5E4890DC428FA5A1BF92DF
depends:        mac80211,rtlwifi

rtlwifi
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko
srcversion:     E1F4663325225EE8DBA54CA
depends:        mac80211,cfg80211

mac80211
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/net/mac80211/mac80211.ko
srcversion:     8ADA881D348148A3358334C
depends:        cfg80211
parm:           max_nullfunc_tries:Maximum nullfunc tx tries before disconnecting (reason 4). (int)
parm:           max_probe_tries:Maximum probe tries before disconnecting (reason 4). (int)
parm:           beacon_loss_count:Number of beacon intervals before we decide beacon was lost. (int)
parm:           probe_wait_ms:Maximum time(ms) to wait for probe response before disconnecting (reason 4). (int)
parm:           ieee80211_default_rc_algo:Default rate control algorithm for mac80211 to use (charp)

cfg80211
--------------------filename:       /lib/modules/3.13.0-34-generic/kernel/net/wireless/cfg80211.ko
srcversion:     E786D076B61F97809B04B64
depends:        
parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)


***** udev rules *****

# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

# PCI device 0x10ec:0xb723 (rtl8723be)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC address removed>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

***** dmesg *****

[    0.908100] wmi: Mapper loaded
[   12.502972] cfg80211: Calling CRDA to update world regulatory domain
[   12.608804] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin
[   12.624517] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   12.624734] rtlwifi: wireless switch is on
[   12.676192] asus_wmi: Asus Management GUID not found
[   12.774399] cfg80211: World regulatory domain updated:
[   12.774401] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[   12.774402] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[   12.774403] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[   12.774404] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[   12.774405] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[   12.774406] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[   13.617694] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   13.617927] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  571.799523] wlan0: authenticate with <MAC address removed>
[  571.819020] wlan0: send auth to <MAC address removed> (try 1/3)
[  571.821075] wlan0: authenticated
[  571.822766] wlan0: associate with <MAC address removed> (try 1/3)
[  571.826434] wlan0: RX AssocResp from <MAC address removed> (capab=0x411 status=0 aid=1)
[  571.826560] wlan0: associated
[  571.826568] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 1060.479604] wlan0: Connection to AP <MAC address removed> lost
[ 1060.525099] cfg80211: Calling CRDA to update world regulatory domain
[ 1060.531821] cfg80211: World regulatory domain updated:
[ 1060.531829] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 1060.531834] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1060.531838] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1060.531841] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 1060.531844] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1060.531847] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 1068.231107] wlan0: authenticate with <MAC address removed>
[ 1068.249483] wlan0: send auth to <MAC address removed> (try 1/3)
[ 1068.250948] wlan0: authenticated
[ 1068.253124] wlan0: associate with <MAC address removed> (try 1/3)
[ 1068.258018] wlan0: RX AssocResp from <MAC address removed> (capab=0x411 status=0 aid=2)
[ 1068.258140] wlan0: associated
[ 2410.717744] wlan0: deauthenticating from <MAC address removed> by local choice (reason=3)
[ 2410.751036] cfg80211: Calling CRDA to update world regulatory domain
[ 2410.758265] cfg80211: World regulatory domain updated:
[ 2410.758271] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 2410.758275] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 2410.758278] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 2410.758280] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 2410.758282] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 2410.758284] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 2414.783072] rtlwifi: wireless switch is on
[ 2417.925603] rtl8723be 0000:02:00.0: no hotplug settings from platform
[ 2417.926230] rtl8723be 0000:02:00.0: no hotplug settings from platform
[ 2417.926693] rtl8723be 0000:02:00.0: no hotplug settings from platform
[ 2419.001513] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 2420.754001] wlan0: authenticate with <MAC address removed>
[ 2420.773076] wlan0: send auth to <MAC address removed> (try 1/3)
[ 2420.779023] wlan0: authenticated
[ 2420.780668] wlan0: associate with <MAC address removed> (try 1/3)
[ 2420.786480] wlan0: RX AssocResp from <MAC address removed> (capab=0x411 status=0 aid=2)
[ 2420.786628] wlan0: associated
[ 2420.786677] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 3892.834137] wlan0: Connection to AP <MAC address removed> lost
[ 3892.883312] cfg80211: Calling CRDA to update world regulatory domain
[ 3892.888197] cfg80211: World regulatory domain updated:
[ 3892.888201] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 3892.888204] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 3892.888207] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 3892.888208] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 3892.888210] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 3892.888212] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 3894.281069] wlan0: authenticate with <MAC address removed>
[ 3894.300188] wlan0: send auth to <MAC address removed> (try 1/3)
[ 3894.301709] wlan0: authenticated
[ 3894.303923] wlan0: associate with <MAC address removed> (try 1/3)
[ 3894.308043] wlan0: RX AssocResp from <MAC address removed> (capab=0x411 status=0 aid=2)
[ 3894.308207] wlan0: associated

****************** done ******************

**chili555** · August 17th, 2014

I have a couple of suggestions. First, check the settings in the router. WPA2-AES is preferred; not any WPA and WPA2 mixed mode and certainly not TKIP. Second, if your router is capable of N speeds, I have better luck with a channel width of 20 MHz in the 2.4 GHz band instead of automatic 20/40 MHz. I also have better luck with a fixed channel, either 1, 6 or 11, rather than automatic channel selection. After making these changes, reboot the router.

Next, I recommend that your regulatory domain be set explicitly. Check yours:

Code:

sudo iw reg get

If you get 00, that is a one-size-maybe-fits-all setting. Find yours here: http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2 Then set it temporarily:

Code:

sudo iw reg set IS

Of course, substitute your country code if not Iceland. Set it permanently:

Code:

gksudo gedit /etc/default/crda

Use nano or kate or leafpad if you don't have the text editor gedit.

Change the last line to read:

Code:

REGDOMAIN=IS

Proofread carefully, save and close the text editor.

Next, I'd set IPv6 to Ignore in Network Manager: http://docs.fedoraproject.org/en-US/...pv6-ignore.png This example is for ethernet, but you want wireless.

**viahj** · August 17th, 2014

I've followed your advice, now will wait and see if the problems persists. Thanks.

**viahj** · August 17th, 2014

Well, it was stable for a couple of hours. My other laptop hasn't had this issue running 14.04. I don't know which wifi adapter it has, but it's an old Dell Ispiron 1520. Hmmm. I don't want to go back to Win7 but may have too.

**chili555** · August 17th, 2014

Originally Posted by viahj

Well, it was stable for a couple of hours. My other laptop hasn't had this issue running 14.04. I don't know which wifi adapter it has, but it's an old Dell Ispiron 1520. Hmmm. I don't want to go back to Win7 but may have too.

Let's try a driver parameter:

Code:

sudo -i
echo "options rtl8723be swenc=1"  >  /etc/modprobe.d/rtlwifi.conf
modprobe -r rtl8723be &&  modprobe rtl8723be
exit

Right after it disconnects, if it does, please run and post:

Code:

cat /var/log/syslog | grep -e rtl -e etwork | tail -n20

**varunendra** · August 17th, 2014

By the way, viahj, you seem to have run a very old (transitioning) version of wireless_script. Next time, please use the new one : http://ubuntuforums.org/showpost.php?p=13024222

Or the one suggested here (if the above one fails to generate a report) : http://ubuntuforums.org/showpost.php?p=12350385

**viahj** · August 17th, 2014

here is the new script

Code:

########## wireless info START ##########

Report from: 17 Aug 2014 12:39 CDT -0500

Script from: 16 Aug 2014 22:12 UTC +0000

##### release #####

Distributor ID:    Ubuntu
Description:    Ubuntu 14.04.1 LTS
Release:    14.04
Codename:    trusty

##### kernel #####

Linux 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop #####

Ubuntu

##### lspci #####

02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    Subsystem: Lenovo Device [17aa:b736]
    Kernel driver in use: rtl8723be

03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    Subsystem: Lenovo Device [17aa:3810]
    Kernel driver in use: r8169

##### lsusb #####

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 03eb:8a1b Atmel Corp. 
Bus 001 Device 003: ID 0bda:b728 Realtek Semiconductor Corp. 
Bus 001 Device 002: ID 13d3:5727 IMC Networks 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info #####

##### rfkill #####

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
3: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
4: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

##### lsmod #####

rtl8723be              85118  0 
btcoexist              50304  1 rtl8723be
rtl8723_common         23361  1 rtl8723be
rtl_pci                26690  1 rtl8723be
rtlwifi                63475  2 rtl_pci,rtl8723be
mac80211              630653  3 rtl_pci,rtlwifi,rtl8723be
cfg80211              484040  2 mac80211,rtlwifi
wmi                    19177  0 

##### interfaces #####

auto lo
iface lo inet loopback

##### ifconfig #####

eth0      Link encap:Ethernet  HWaddr <MAC addr eth0>  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan0     Link encap:Ethernet  HWaddr <MAC addr wlan0>  
          inet addr:192.168.2.13  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::9ead:97ff:fe22:2401/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2416 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1957 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1134980 (1.1 MB)  TX bytes:279283 (279.2 KB)

##### iwconfig #####

eth0      no wireless extensions.

lo        no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:"belkin.viahj"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: <MAC addr belkin.viahj>   
          Bit Rate=72.2 Mb/s   Tx-Power=20 dBm   
          Retry  long limit:7   RTS thr=2347 B   Fragment thr:off
          Power Management:off
          Link Quality=70/70  Signal level=-18 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:1   Missed beacon:0

##### route #####

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 wlan0
192.168.2.0     0.0.0.0         255.255.255.0   U     9      0        0 wlan0

##### resolv.conf #####

nameserver 127.0.1.1
search belkin

##### nm-tool #####

NetworkManager Tool

State: connected (global)

- Device: eth0 -----------------------------------------------------------------
  Type:              Wired
  Driver:            r8169
  State:             unavailable
  Default:           no
  HW Address:        <MAC addr eth0>

  Capabilities:
    Carrier Detect:  yes

  Wired Properties
    Carrier:         off

- Device: wlan0  [belkin.viahj] ------------------------------------------------
  Type:              802.11 WiFi
  Driver:            rtl8723be
  State:             connected
  Default:           yes
  HW Address:        <MAC addr wlan0>

  Capabilities:
    Speed:           7 Mb/s

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

  Wireless Access Points (* = current AP)
    Virus:           Infra, <MAC addr Virus>, Freq 2462 MHz, Rate 54 Mb/s, Strength 100 WPA2
    Trojan Virus Installer: Infra, <MAC addr Trojan Virus Installer>, Freq 2462 MHz, Rate 54 Mb/s, Strength 100 WPA2
    2WIRE589:        Infra, <MAC addr 2WIRE589>, Freq 2432 MHz, Rate 54 Mb/s, Strength 84 WPA WPA2
    sheridan:        Infra, <MAC addr sheridan>, Freq 2422 MHz, Rate 54 Mb/s, Strength 80 WPA2
    ATT9jpidbA:      Infra, <MAC addr ATT9jpidbA>, Freq 2462 MHz, Rate 54 Mb/s, Strength 80 WPA WPA2
    Airport:         Infra, <MAC addr Airport>, Freq 2462 MHz, Rate 54 Mb/s, Strength 70 WPA2
    CVRM:            Infra, <MAC addr CVRM>, Freq 2437 MHz, Rate 54 Mb/s, Strength 60 WPA
    SHENG:           Infra, <MAC addr SHENG>, Freq 2412 MHz, Rate 54 Mb/s, Strength 57 WPA WPA2
    ATTSqYrxtA:      Infra, <MAC addr ATTSqYrxtA>, Freq 2437 MHz, Rate 54 Mb/s, Strength 57 WPA WPA2
    ATTjPCiFi2:      Infra, <MAC addr ATTjPCiFi2>, Freq 2412 MHz, Rate 54 Mb/s, Strength 54 WPA WPA2
    2WIRE021:        Infra, <MAC addr 2WIRE021>, Freq 2422 MHz, Rate 54 Mb/s, Strength 47 WPA WPA2
    SHENG-guest:     Infra, <MAC addr SHENG-guest>, Freq 2412 MHz, Rate 54 Mb/s, Strength 67
    *belkin.viahj:   Infra, <MAC addr belkin.viahj>, Freq 2412 MHz, Rate 54 Mb/s, Strength 94 WPA2
    DIRECT-aE-BRAVIA:Infra, <MAC addr DIRECT-aE-BRAVIA>, Freq 2412 MHz, Rate 54 Mb/s, Strength 99 WPA2
    DARLA-PC_Network:Infra, <MAC addr DARLA-PC_Network>, Freq 2437 MHz, Rate 54 Mb/s, Strength 47 WPA2
    nancynolte's Network: Infra, <MAC addr nancynolte's Network>, Freq 2417 MHz, Rate 54 Mb/s, Strength 47 WPA2
    REVOLUTION:      Infra, <MAC addr REVOLUTION>, Freq 2417 MHz, Rate 54 Mb/s, Strength 28 WPA2

  IPv4 Settings:
    Address:         192.168.2.13
    Prefix:          24 (255.255.255.0)
    Gateway:         192.168.2.1

    DNS:             192.168.2.1

##### NetworkManager.state #####

[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
WimaxEnabled=true

##### NetworkManager.conf #####

[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

no-auto-default=<MAC addr eth0>,

[ifupdown]
managed=false

##### iw reg get #####

country US:
    (2402 - 2472 @ 40), (3, 27)
    (5170 - 5250 @ 40), (3, 17)
    (5250 - 5330 @ 40), (3, 20), DFS
    (5490 - 5600 @ 40), (3, 20), DFS
    (5650 - 5710 @ 40), (3, 20), DFS
    (5735 - 5835 @ 40), (3, 30)
    (57240 - 63720 @ 2160), (N/A, 40)

##### iwlist channels #####

eth0      no frequency information.

lo        no frequency information.

wlan0     11 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Current Frequency:2.412 GHz (Channel 1)

##### iwlist scan #####

eth0      Interface doesn't support scanning.

lo        Interface doesn't support scanning.

Channel occupancy:
     5   WLAPs on   Frequency:2.412 GHz (Channel 1)
     1   WLAPs on   Frequency:2.417 GHz (Channel 2)
     2   WLAPs on   Frequency:2.422 GHz (Channel 3)
     1   WLAPs on   Frequency:2.432 GHz (Channel 5)
     3   WLAPs on   Frequency:2.437 GHz (Channel 6)
     5   WLAPs on   Frequency:2.462 GHz (Channel 11)

wlan0     Scan completed :
          Cell 01 - Address: <MAC addr belkin.viahj>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=42/70  Signal level=-68 dBm  
                    Encryption key:on
                    ESSID:"belkin.viahj"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000000ed7fa16da
                    Extra: Last beacon: 84ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 02 - Address: <MAC addr Trojan Virus Installer>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=70/70  Signal level=-18 dBm  
                    Encryption key:on
                    ESSID:"Trojan Virus Installer"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000001fb8f350b4
                    Extra: Last beacon: 24ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 03 - Address: <MAC addr SHENG-guest>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:off
                    ESSID:"SHENG-guest"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000003934a9c9c
                    Extra: Last beacon: 160ms ago
          Cell 04 - Address: <MAC addr DIRECT-aE-BRAVIA>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=17/70  Signal level=-93 dBm  
                    Encryption key:on
                    ESSID:"DIRECT-aE-BRAVIA"
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000ed7fa26fb
                    Extra: Last beacon: 88ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 05 - Address: <MAC addr ATTjPCiFi2>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=42/70  Signal level=-68 dBm  
                    Encryption key:on
                    ESSID:"ATTjPCiFi2"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000277327a5c14
                    Extra: Last beacon: 104ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 06 - Address: <MAC addr sheridan>
                    Channel:3
                    Frequency:2.422 GHz (Channel 3)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"sheridan"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=0000018b87088771
                    Extra: Last beacon: 248ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 07 - Address: <MAC addr 2WIRE021>
                    Channel:3
                    Frequency:2.422 GHz (Channel 3)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"2WIRE021"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000002529936920a
                    Extra: Last beacon: 7644ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 08 - Address: <MAC addr 2WIRE589>
                    Channel:5
                    Frequency:2.432 GHz (Channel 5)
                    Quality=62/70  Signal level=-48 dBm  
                    Encryption key:on
                    ESSID:"2WIRE589"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 6 Mb/s; 9 Mb/s
                              11 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000010334772b74
                    Extra: Last beacon: 2096ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 09 - Address: <MAC addr DARLA-PC_Network>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"DARLA-PC_Network"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000001982b561d7
                    Extra: Last beacon: 1744ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                       Preauthentication Supported
          Cell 10 - Address: <MAC addr CVRM>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=54/70  Signal level=-56 dBm  
                    Encryption key:on
                    ESSID:"CVRM"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000025b19f9ec3
                    Extra: Last beacon: 1060ms ago
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
          Cell 11 - Address: <MAC addr ATTSqYrxtA>
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=70/70  Signal level=-18 dBm  
                    Encryption key:on
                    ESSID:"ATTSqYrxtA"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=000000e69ae23edb
                    Extra: Last beacon: 7644ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 12 - Address: <MAC addr Airport>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=70/70  Signal level=-22 dBm  
                    Encryption key:on
                    ESSID:"Airport"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000103362be7ed
                    Extra: Last beacon: 20ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 13 - Address: <MAC addr Virus>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"Virus"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000177849e53f
                    Extra: Last beacon: 48ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 14 - Address: <MAC address>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=40/70  Signal level=-70 dBm  
                    Encryption key:on
                    ESSID:"Virus"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=00000017784a21ae
                    Extra: Last beacon: 32ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
          Cell 15 - Address: <MAC addr ATT9jpidbA>
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=38/70  Signal level=-72 dBm  
                    Encryption key:on
                    ESSID:"ATT9jpidbA"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000277da2a10e6
                    Extra: Last beacon: 8ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 16 - Address: <MAC addr SHENG>
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=62/70  Signal level=-48 dBm  
                    Encryption key:on
                    ESSID:"SHENG"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
                              24 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000003934a8f14
                    Extra: Last beacon: 156ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
          Cell 17 - Address: <MAC addr REVOLUTION>
                    Channel:2
                    Frequency:2.417 GHz (Channel 2)
                    Quality=70/70  Signal level=-26 dBm  
                    Encryption key:on
                    ESSID:"REVOLUTION"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000ec3426dd80
                    Extra: Last beacon: 1940ms ago
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK

##### module infos #####

[rtl8723be]
filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723be/rtl8723be.ko
firmware:       rtlwifi/rtl8723befw.bin
description:    Realtek 8723BE 802.11n PCI wireless
license:        GPL
author:         Realtek WlanFAE    <wlanfae@realtek.com>
author:         PageHe    <page_he@realsil.com.cn>
srcversion:     0D59E0301AAA6E5A93400BB
depends:        rtlwifi,rtl8723-common,rtl_pci,btcoexist,mac80211
intree:         Y
vermagic:       3.13.0-34-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        50:0B:C5:C8:7D:4B:11:5C:F3:C1:50:4F:7A:92:E2:33:C6:14:3D:58
sig_hashalgo:   sha512
parm:           swlps:bool
parm:           swenc:using hardware crypto (default 0 [hardware])
 (bool)
parm:           ips:using no link power save (default 1 is open)
 (bool)
parm:           fwlps:using linked fw control power save (default 1 is open)
 (bool)
parm:           msi:Set to 1 to use MSI interrupts mode (default 0)
 (bool)
parm:           debug:Set debug level (0-5) (default 0) (int)

[rtl8723_common]
filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723com/rtl8723-common.ko
description:    Realtek RTL8723AE/RTL8723BE 802.11n PCI wireless common routines
license:        GPL
author:         Larry Finger    <Larry.Finger@lwfinger.net>
author:         Realtek WlanFAE    <wlanfae@realtek.com>
srcversion:     D1807280DBDC9B8A7EBDAB7
depends:        
intree:         Y
vermagic:       3.13.0-34-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        50:0B:C5:C8:7D:4B:11:5C:F3:C1:50:4F:7A:92:E2:33:C6:14:3D:58
sig_hashalgo:   sha512

[rtl_pci]
filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtl_pci.ko
description:    PCI basic driver for rtlwifi
license:        GPL
author:         Larry Finger    <Larry.FInger@lwfinger.net>
author:         Realtek WlanFAE    <wlanfae@realtek.com>
author:         lizhaoming    <chaoming_li@realsil.com.cn>
srcversion:     D5E4890DC428FA5A1BF92DF
depends:        mac80211,rtlwifi
intree:         Y
vermagic:       3.13.0-34-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        50:0B:C5:C8:7D:4B:11:5C:F3:C1:50:4F:7A:92:E2:33:C6:14:3D:58
sig_hashalgo:   sha512

[rtlwifi]
filename:       /lib/modules/3.13.0-34-generic/kernel/drivers/net/wireless/rtlwifi/rtlwifi.ko
description:    Realtek 802.11n PCI wireless core
license:        GPL
author:         Larry Finger    <Larry.FInger@lwfinger.net>
author:         Realtek WlanFAE    <wlanfae@realtek.com>
author:         lizhaoming    <chaoming_li@realsil.com.cn>
srcversion:     E1F4663325225EE8DBA54CA
depends:        mac80211,cfg80211
intree:         Y
vermagic:       3.13.0-34-generic SMP mod_unload modversions 
signer:         Magrathea: Glacier signing key
sig_key:        50:0B:C5:C8:7D:4B:11:5C:F3:C1:50:4F:7A:92:E2:33:C6:14:3D:58
sig_hashalgo:   sha512

##### module parameters #####

[rtl8723be]
debug: 0
fwlps: Y
ips: Y
msi: N
swenc: N
swlps: N

##### /etc/modules #####

lp
rtc

##### blacklists #####

[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci

[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac

##### udev rules #####

[/etc/udev/rules.d/70-persistent-net.rules]
# PCI device 0x10ec:0x8168 (r8169)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC addr eth0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x10ec:0xb723 (rtl8723be)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="<MAC addr wlan0>", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="wlan*", NAME="wlan0"

##### dmesg #####

[   13.375560] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin
[   13.445267] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   13.445490] rtlwifi: wireless switch is on
[   14.467131] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 2 times)
[   15.942516] wlan0: authenticate with <MAC addr belkin.viahj>
[   15.969388] wlan0: send auth to <MAC addr belkin.viahj> (try 1/3)
[   15.970926] wlan0: authenticated
[   15.973945] wlan0: associate with <MAC addr belkin.viahj> (try 1/3)
[   15.979430] wlan0: RX AssocResp from <MAC addr belkin.viahj> (capab=0x411 status=0 aid=2)
[   15.979555] wlan0: associated
[   15.979579] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[   16.130305] wlan0: authenticate with <MAC addr DARLA-PC_Network>
[   16.140493] wlan0: send auth to <MAC addr DARLA-PC_Network> (try 1/3)
[   16.142057] wlan0: authenticated
[   16.146035] wlan0: associate with <MAC addr DARLA-PC_Network> (try 1/3)
[   16.164285] wlan0: RX AssocResp from <MAC addr DARLA-PC_Network> (capab=0x431 status=0 aid=1)
[   16.164409] wlan0: associated
[   26.215147] wlan0: deauthenticating from <MAC addr DARLA-PC_Network> by local choice (reason=3)
[   27.517541] wlan0: authenticate with <MAC addr belkin.viahj>
[   27.537261] wlan0: send auth to <MAC addr belkin.viahj> (try 1/3)
[   27.538939] wlan0: authenticated
[   27.541085] wlan0: associate with <MAC addr belkin.viahj> (try 1/3)
[   27.544933] wlan0: RX AssocResp from <MAC addr belkin.viahj> (capab=0x411 status=0 aid=2)
[   27.545072] wlan0: associated
[  378.226273] wlan0: deauthenticating from <MAC addr belkin.viahj> by local choice (reason=3)
[  381.294112] rtlwifi: wireless switch is on
[  384.511611] rtl8723be 0000:02:00.0: no hotplug settings from platform (repeated 3 times)
[  385.398783] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[  386.855988] wlan0: authenticate with <MAC addr belkin.viahj>
[  386.874685] wlan0: send auth to <MAC addr belkin.viahj> (try 1/3)
[  386.880123] wlan0: authenticated
[  386.882279] wlan0: associate with <MAC addr belkin.viahj> (try 1/3)
[  386.889790] wlan0: RX AssocResp from <MAC addr belkin.viahj> (capab=0x411 status=0 aid=3)
[  386.889906] wlan0: associated
[  386.889921] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[  386.917250] wlan0: deauthenticating from <MAC addr belkin.viahj> by local choice (reason=2)
[  386.948559] wlan0: authenticate with <MAC addr belkin.viahj>
[  386.958747] wlan0: send auth to <MAC addr belkin.viahj> (try 1/3)
[  386.960286] wlan0: authenticated
[  386.962732] wlan0: associate with <MAC addr belkin.viahj> (try 1/3)
[  386.965898] wlan0: RX AssocResp from <MAC addr belkin.viahj> (capab=0x411 status=0 aid=3)
[  386.966048] wlan0: associated
[  740.311104] wlan0: Connection to AP <MAC addr belkin.viahj> lost
[  741.630429] wlan0: authenticate with <MAC addr belkin.viahj>
[  741.649077] wlan0: send auth to <MAC addr belkin.viahj> (try 1/3)
[  741.652831] wlan0: authenticated
[  741.656790] wlan0: associate with <MAC addr belkin.viahj> (try 1/3)
[  741.663463] wlan0: RX AssocResp from <MAC addr belkin.viahj> (capab=0x411 status=0 aid=3)
[  741.663616] wlan0: associated

########## wireless info END ############

**viahj** · August 17th, 2014

chili555, is this what I was suppossed to do? (sorry but I am a novice)

Code:

viahj@viahj-lenovo:~$ cat /var/log/syslog | grep -e rtl -e etwork | tail -n20
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0/wireless): access point 'belkin.viahj' has security, but secrets are required.
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> (wlan0): device state change: config -> need-auth (reason 'none') [50 60 0]
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled...
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started...
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> (wlan0): device state change: need-auth -> prepare (reason 'none') [60 40 0]
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled...
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete.
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting...
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> (wlan0): device state change: prepare -> config (reason 'none') [40 50 0]
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0/wireless): connection 'belkin.viahj' has security, and secrets exist.  No new secrets needed.
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Config: added 'ssid' value 'belkin.viahj'
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Config: added 'scan_ssid' value '1'
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Config: added 'key_mgmt' value 'WPA-PSK'
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Config: added 'psk' value '<omitted>'
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete.
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> Config: set interface ap_scan to 1
Aug 17 12:49:58 viahj-lenovo NetworkManager[947]: <info> (wlan0): supplicant interface state: inactive -> authenticating
Aug 17 12:50:03 viahj-lenovo NetworkManager[947]: <info> (wlan0): supplicant interface state: authenticating -> disconnected
Aug 17 12:50:03 viahj-lenovo NetworkManager[947]: <info> (wlan0): supplicant interface state: disconnected -> scanning

**chili555** · August 17th, 2014

chili555, is this what I was suppossed to do?

Exactly correct!!

This is from your wireless script:

[ 15.979579] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 16.130305] wlan0: authenticate with <MAC addr DARLA-PC_Network>
[ 16.140493] wlan0: send auth to <MAC addr DARLA-PC_Network> (try 1/3)
[ 16.142057] wlan0: authenticated
[ 16.146035] wlan0: associate with <MAC addr DARLA-PC_Network> (try 1/3)
[ 16.164285] wlan0: RX AssocResp from <MAC addr DARLA-PC_Network> (capab=0x431 status=0 aid=1)
[ 16.164409] wlan0: associated
[ 26.215147] wlan0: deauthenticating from <MAC addr DARLA-PC_Network> by local choice (reason=3)
[ 27.517541] wlan0: authenticate with <MAC addr belkin.viahj>
[ 27.537261] wlan0: send auth to <MAC addr belkin.viahj> (try 1/3)
[ 27.538939] wlan0: authenticated
[ 27.541085] wlan0: associate with <MAC addr belkin.viahj> (try 1/3)
[ 27.544933] wlan0: RX AssocResp from <MAC addr belkin.viahj> (capab=0x411 status=0 aid=2)
[ 27.545072] wlan0: associated

I suspect the disconnects are when Network Manager decides to try to roam to another, stronger network. I suggest you set NM to bind to ONLY the desired network using this method: http://askubuntu.com/questions/42558.../425617#425617