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Thread: [ubuntu] Wireless connection disappears after while

  1. #1
    Join Date
    Sep 2014
    Beans
    2

    [ubuntu] Wireless connection disappears after while

    My wireless connection disappears after while. It starts working after reboot and again disappears. I have looked for solutions, bu haven't found any working. Here are logs from script from Forum:

    Code:
    
    ########## wireless info START ##########
    
    
    Report from: 10 Sep 2014 19:44 CEST +0200
    
    
    Script from: 05 Sep 2014 22:42 UTC +0000
    
    
    ##### release #####
    
    
    Distributor ID:	Ubuntu
    Description:	Ubuntu 14.04.1 LTS
    Release:	14.04
    Codename:	trusty
    
    
    ##### kernel #####
    
    
    Linux 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
    
    
    Parameters: ro, quiet, splash, vt.handoff=7
    
    
    ##### desktop #####
    
    
    Ubuntu
    
    
    ##### lspci #####
    
    
    08:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    	Subsystem: Lenovo Device [17aa:b736]
    	Kernel driver in use: rtl8723be
    
    
    09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
    	Subsystem: Lenovo Device [17aa:380d]
    	Kernel driver in use: r8169
    
    
    ##### lsusb #####
    
    
    Bus 002 Device 002: ID 8087:8000 Intel Corp. 
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 002: ID 8087:8008 Intel Corp. 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 006: ID 046d:c526 Logitech, Inc. Nano Receiver
    Bus 003 Device 005: ID 0bda:b728 Realtek Semiconductor Corp. 
    Bus 003 Device 004: ID 5986:055e Acer, Inc 
    Bus 003 Device 003: ID 0fce:0193 Sony Ericsson Mobile Communications AB 
    Bus 003 Device 002: ID 13ba:0017 PCPlay PS/2 Keyboard+Mouse Adapter
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    
    ##### PCMCIA card info #####
    
    
    ##### rfkill #####
    
    
    0: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    1: ideapad_wlan: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    2: ideapad_bluetooth: Bluetooth
    	Soft blocked: no
    	Hard blocked: no
    3: 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
    mxm_wmi                13021  1 nouveau
    wmi                    19177  2 mxm_wmi,nouveau
    
    
    ##### 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:192.168.1.17  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::9248:9aff:fec9:653f/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:32189 errors:0 dropped:0 overruns:0 frame:0
              TX packets:21063 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:41592205 (41.5 MB)  TX bytes:2793098 (2.7 MB)
    
    
    ##### iwconfig #####
    
    
    eth0      no wireless extensions.
    
    
    lo        no wireless extensions.
    
    
    wlan0     IEEE 802.11bgn  ESSID:"Livebox-DBE5"  
              Mode:Managed  Frequency:2.412 GHz  Access Point: <MAC addr Livebox-DBE5>   
              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=30/70  Signal level=-80 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:0  Invalid misc:128   Missed beacon:0
    
    
    ##### route #####
    
    
    Kernel IP routing table
    Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
    0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 wlan0
    192.168.1.0     0.0.0.0         255.255.255.0   U     9      0        0 wlan0
    
    
    ##### resolv.conf #####
    
    
    nameserver 127.0.1.1
    search home
    
    
    ##### 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  [Livebox-DBE5] ------------------------------------------------
      Type:              802.11 WiFi
      Driver:            rtl8723be
      State:             connected
      Default:           yes
      HW Address:        <MAC addr wlan0>
    
    
      Capabilities:
        Speed:           72 Mb/s
    
    
      Wireless Properties
        WEP Encryption:  yes
        WPA Encryption:  yes
        WPA2 Encryption: yes
    
    
      Wireless Access Points (* = current AP)
        Orange_FunSpot:  Infra, <MAC addr Orange_FunSpot>, Freq 2412 MHz, Rate 54 Mb/s, Strength 100
        *Livebox-DBE5:   Infra, <MAC addr Livebox-DBE5>, Freq 2412 MHz, Rate 54 Mb/s, Strength 95 WPA WPA2
    
    
      IPv4 Settings:
        Address:         192.168.1.17
        Prefix:          24 (255.255.255.0)
        Gateway:         192.168.1.1
    
    
        DNS:             192.168.1.1
    
    
    ##### NetworkManager.state #####
    
    
    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true
    WimaxEnabled=true
    
    
    ##### NetworkManager.conf #####
    
    
    [main]
    plugins=ifupdown,keyfile,ofono
    dns=dnsmasq
    
    
    [ifupdown]
    managed=false
    
    
    ##### iw reg get #####
    
    
    country PL:
    	(2402 - 2482 @ 40), (N/A, 20)
    	(5170 - 5250 @ 40), (N/A, 20)
    	(5250 - 5330 @ 40), (N/A, 20), DFS
    	(5490 - 5710 @ 40), (N/A, 27), DFS
    	(57240 - 65880 @ 2160), (N/A, 40), NO-OUTDOOR
    
    
    ##### iwlist channels #####
    
    
    eth0      no frequency information.
    
    
    lo        no frequency information.
    
    
    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:2.412 GHz (Channel 1)
    
    
    ##### iwlist scan #####
    
    
    Channel occupancy:
    
    
         2   WLAPs on   Frequency:2.412 GHz (Channel 1)
    
    
    eth0      Interface doesn't support scanning.
    
    
    lo        Interface doesn't support scanning.
    
    
    wlan0     Scan completed :
              Cell 01 - Address: <MAC addr Livebox-DBE5>
                        Channel:1
                        Frequency:2.412 GHz (Channel 1)
                        Quality=30/70  Signal level=-80 dBm  
                        Encryption key:on
                        ESSID:"Livebox-DBE5"
                        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=0000000069e6e107
                        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 02 - Address: <MAC addr Orange_FunSpot>
                        Channel:1
                        Frequency:2.412 GHz (Channel 1)
                        Quality=70/70  Signal level=30 dBm  
                        Encryption key:off
                        ESSID:"Orange_FunSpot"
                        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=000000006a114a2c
                        Extra: Last beacon: 8ms ago
    
    
    ##### module infos #####
    
    
    [rtl8723be]
    filename:       /lib/modules/3.13.0-35-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:       3.13.0-35-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        B1:41:4A:E9:6C:1B:0E:BB:7C:14:1F:A4:05:C1:F6:C9:8E:8A:66:F0
    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/3.13.0-35-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:       3.13.0-35-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        B1:41:4A:E9:6C:1B:0E:BB:7C:14:1F:A4:05:C1:F6:C9:8E:8A:66:F0
    sig_hashalgo:   sha512
    
    
    [rtl_pci]
    filename:       /lib/modules/3.13.0-35-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:       3.13.0-35-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        B1:41:4A:E9:6C:1B:0E:BB:7C:14:1F:A4:05:C1:F6:C9:8E:8A:66:F0
    sig_hashalgo:   sha512
    
    
    [rtlwifi]
    filename:       /lib/modules/3.13.0-35-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:       3.13.0-35-generic SMP mod_unload modversions 
    signer:         Magrathea: Glacier signing key
    sig_key:        B1:41:4A:E9:6C:1B:0E:BB:7C:14:1F:A4:05:C1:F6:C9:8E:8A:66:F0
    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
    
    
    ##### rc.local #####
    
    
    exit 0
    
    
    ##### 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 #####
    
    
    [    4.958946] rtl8723be: Using firmware rtlwifi/rtl8723befw.bin
    [    4.965124] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
    [    4.965289] rtlwifi: wireless switch is on
    [    5.696186] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready (repeated 2 times)
    [    6.585643] wlan0: authenticate with <MAC addr Livebox-DBE5>
    [    6.599256] wlan0: send auth to <MAC addr Livebox-DBE5> (try 1/3)
    [    6.601335] wlan0: authenticated
    [    6.602971] wlan0: associate with <MAC addr Livebox-DBE5> (try 1/3)
    [    6.607441] wlan0: RX AssocResp from <MAC addr Livebox-DBE5> (capab=0x411 status=0 aid=1)
    [    6.607588] wlan0: associated
    [    6.607611] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    [    6.613264] wlan0: Limiting TX power to 20 (20 - 0) dBm as advertised by <MAC addr Livebox-DBE5>
    
    
    ########## wireless info END ############

  2. #2
    Join Date
    Mar 2010
    Location
    India
    Beans
    8,149
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: [ubuntu] Wireless connection disappears after while

    Welcome to the forums Jakub_Nowak !

    Please open a terminal (Ctrl-Alt-T) and run the following code in it (you may copy-paste it to avoid typo) -
    Code:
    echo "options rtl8723be fwlps=N ips=N" | sudo tee /etc/modprobe.d/rtl8723be.conf
    Then either reboot, or manually reload the driver -
    Code:
    sudo modprobe -rv rtl8723be
    sudo modprobe -v rtl8723be
    Does it remain stable now?

    As an additional measure to improve your connection quality, it is highly recommended that you should change the encryption type in your router/access-point to pure WPA2-PSK with AES (CCMP). Currently it is using WPA/WPA2 mixed mode with TKIP which should be avoided as long as possible.
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
    Wireless Script | Use Code Tags

  3. #3
    Join Date
    Sep 2014
    Beans
    2

    Re: [ubuntu] Wireless connection disappears after while

    Thank You very much. Everything has been working properly since I applied your fix. Also thanks to your advice with router configuration.

  4. #4
    Join Date
    Mar 2010
    Location
    India
    Beans
    8,149
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: [ubuntu] Wireless connection disappears after while

    Awesome!! I was very-very-very eagerly waiting for a confirmation regarding this, at least three threads I have been following that are waiting for a fix!

    Please mark the thread as [SOLVED] using "Thread Tools" link above the top post. Thanks!
    Varun
    Help others by marking threads as [SOLVED], if they are. (See how)
    Wireless Script | Use Code Tags

  5. #5
    Join Date
    Oct 2013
    Beans
    1

    Re: [ubuntu] Wireless connection disappears after while

    thanks a lot for solving this severe problem, you made me very, very happy dear Varun [varunendra]!!
    you're AweSome !
    Last edited by k100rs; March 20th, 2015 at 07:28 PM.

  6. #6
    Join Date
    Sep 2006
    Location
    Switzerland
    Beans
    12
    Distro
    Kubuntu 9.04 Jaunty Jackalope

    Re: [ubuntu] Wireless connection disappears after while

    after long suffering I finally found this post and it seems to have worked for me too. Thanks!

    my output of lspci also shows a Realtek
    RTL8723BE PCIe Wireless Network Adapter
    .....@.... Lenovo-Flex-2-15:~$ lspci
    00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
    00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
    00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
    00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04)
    00:16.0 Communication controller: Intel Corporation Lynx Point-LP HECI #0 (rev 04)
    00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev 04)
    00:1c.0 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 1 (rev e4)
    00:1c.2 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 3 (rev e4)
    00:1c.3 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 4 (rev e4)
    00:1c.4 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 5 (rev e4)
    00:1f.0 ISA bridge: Intel Corporation Lynx Point-LP LPC Controller (rev 04)
    00:1f.2 SATA controller: Intel Corporation Lynx Point-LP SATA Controller 1 [AHCI mode] (rev 04)
    00:1f.3 SMBus: Intel Corporation Lynx Point-LP SMBus Controller (rev 04)
    02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter
    03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
    04:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] (rev a1)

  7. #7
    Join Date
    Apr 2015
    Beans
    13

    Re: [ubuntu] Wireless connection disappears after while

    Hi Varunendra,
    I have a simillar issue, with Lenovo G50-45 laptop. I recently installed Ubuntu 14.04.2 and the wireless connectivity seems to last maximum 10 minutes. After that, webpages start to slow down and finally it will say that the connection is lost. Turning off the wi-fi and turning it back on does not resolve the issue. The only solution is to reboot the computer. Internet works fine with a wired connection. I assume it is an issue with the wireless drivers? If so, how can I make the wireless connection stable?
    Thank you so much!

  8. #8
    Join Date
    Oct 2011
    Location
    Galiza
    Beans
    3,384
    Distro
    Ubuntu Development Release

    Re: [ubuntu] Wireless connection disappears after while

    @bob_smith3 - So, here you are again this time hijacking an old thread...

    I already posted what you should do in your own thread. Please neither open another for the same issue nor hijack other people's threads and follow up in yours. Thank you.
    Galiza Nação!

  9. #9
    Join Date
    Jun 2006
    Location
    UK
    Beans
    Hidden!
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: [ubuntu] Wireless connection disappears after while

    Thread closed to prevent further thread hijacks.

    If anyone needs help with a similar issue, please start your own thread - just one will do!
    Ubuntu 16.04 Desktop Guide - Ubuntu 17.10 Desktop Guide - Forum Guide to BBCode - Using BBCode code tags - IRC #ubuntuforums

    Member: Not Canonical Team

    Please do not PM me about your forum account unless you have been asked to. The correct place to contact an admin about your account is here.

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