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Thread: Realtek RTL8723BE weak wifi signal

  1. #1
    Join Date
    Mar 2008
    Location
    India
    Beans
    18
    Distro
    Xubuntu 15.10 Wily Werewolf

    Realtek RTL8723BE weak wifi signal

    Hi,

    I installed Xubuntu 15.10 on my HP Laptop, that has a Realtek RTL8723BE wifi adapter. With Windows, the wifi works pretty well, having good signal strength. But after installing xubuntu, the signal is extremely weak, works when sitting next to modem.
    Please help me to solve this issue.
    Here is the result of wireless-info script.

    Code:
    ########## wireless info START ##########
    
    Report from: 30 Nov 2015 09:26 IST +0530
    
    Booted last: 30 Nov 2015 00:00 IST +0530
    
    Script from: 27 Sep 2015 00:34 UTC +0000
    
    ##### release ###########################
    
    Distributor ID:	Ubuntu
    Description:	Ubuntu 15.10
    Release:	15.10
    Codename:	wily
    
    ##### kernel ############################
    
    Linux 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 15:35:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
    
    Parameters: ro, quiet, splash, vt.handoff=7
    
    ##### desktop ###########################
    
    Xubuntu
    
    ##### lspci #############################
    
    08:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    	DeviceName: Realtek RTL8723BE 802.11b/g/n 1x1Wi-Fi + BT4.0 Combo Adapter
    	Subsystem: Hewlett-Packard Company Device [103c:804c]
    
    09:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136] (rev 0a)
    	DeviceName: Realtek PCIe FE Family Controller
    	Subsystem: Hewlett-Packard Company Device [103c:8096]
    
    ##### lsusb #############################
    
    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 001 Device 003: ID 0bda:b006 Realtek Semiconductor Corp. 
    Bus 001 Device 002: ID 0bda:57c4 Realtek Semiconductor Corp. 
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    
    ##### PCMCIA card info ##################
    
    ##### rfkill ############################
    
    0: hci0: Bluetooth
    	Soft blocked: no
    	Hard blocked: no
    1: phy0: Wireless LAN
    	Soft blocked: no
    	Hard blocked: no
    
    ##### lsmod #############################
    
    rtl8723be             135168  0
    btcoexist             184320  1 rtl8723be
    rtl_pci                40960  1 rtl8723be
    rtlwifi               102400  3 btcoexist,rtl_pci,rtl8723be
    hp_wmi                 16384  0
    sparse_keymap          16384  1 hp_wmi
    mac80211              733184  3 rtl_pci,rtlwifi,rtl8723be
    cfg80211              548864  2 mac80211,rtlwifi
    mxm_wmi                16384  1 nouveau
    wmi                    20480  3 hp_wmi,mxm_wmi,nouveau
    
    ##### interfaces ########################
    
    auto lo
    iface lo inet loopback
    
    ##### ifconfig ##########################
    
    eno1      Link encap:Ethernet  HWaddr <MAC 'eno1' [IF]>  
              inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::<IP6 'eno1' [IF]>/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:36824 errors:0 dropped:0 overruns:0 frame:0
              TX packets:33394 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:43416764 (43.4 MB)  TX bytes:3191932 (3.1 MB)
    
    wlo1      Link encap:Ethernet  HWaddr <MAC 'wlo1' [IF]>  
              inet addr:192.168.1.7  Bcast:192.168.1.255  Mask:255.255.255.0
              inet6 addr: fe80::<IP6 'wlo1' [IF]>/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1280  Metric:1
              RX packets:764 errors:0 dropped:0 overruns:0 frame:0
              TX packets:145 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:187778 (187.7 KB)  TX bytes:19228 (19.2 KB)
    
    ##### iwconfig ##########################
    
    eno1      no wireless extensions.
    
    lo        no wireless extensions.
    
    wlo1      IEEE 802.11bgn  ESSID:"D-Link"  
              Mode:Managed  Frequency:2.412 GHz  Access Point: <MAC 'D-Link' [AC1]>   
              Bit Rate=150 Mb/s   Tx-Power=20 dBm   
              Retry short limit:7   RTS thr=2347 B   Fragment thr:off
              Power Management:off
              Link Quality=44/70  Signal level=-66 dBm  
              Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
              Tx excessive retries:0  Invalid misc:5   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    100    0        0 eno1
    0.0.0.0         192.168.1.1     0.0.0.0         UG    600    0        0 wlo1
    169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 wlo1
    192.168.1.0     0.0.0.0         255.255.255.0   U     100    0        0 eno1
    192.168.1.0     0.0.0.0         255.255.255.0   U     600    0        0 wlo1
    
    ##### resolv.conf #######################
    
    nameserver 127.0.1.1
    search domain.name
    
    ##### network managers ##################
    
    Installed:
    
    	NetworkManager
    
    Running:
    
    root       754     1  0 09:10 ?        00:00:01 /usr/sbin/NetworkManager --no-daemon
    
    ##### NetworkManager info ###############
    
    GENERAL.DEVICE:                         eno1
    GENERAL.TYPE:                           ethernet
    GENERAL.NM-TYPE:                        NMDeviceEthernet
    GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
    GENERAL.PRODUCT:                        RTL8101E/RTL8102E PCI Express Fast Ethernet controller
    GENERAL.DRIVER:                         r8169
    GENERAL.DRIVER-VERSION:                 2.3LK-NAPI
    GENERAL.FIRMWARE-VERSION:               
    GENERAL.HWADDR:                         <MAC 'eno1' [IF]>
    GENERAL.MTU:                            1500
    GENERAL.STATE:                          100 (connected)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.3/0000:09:00.0/net/eno1
    GENERAL.IP-IFACE:                       eno1
    GENERAL.IS-SOFTWARE:                    no
    GENERAL.NM-MANAGED:                     yes
    GENERAL.AUTOCONNECT:                    yes
    GENERAL.FIRMWARE-MISSING:               no
    GENERAL.PHYS-PORT-ID:                   --
    GENERAL.CONNECTION:                     Wired connection 1
    GENERAL.CON-UUID:                       0885c1bb-d55d-4c63-b007-d8db0384b9d9
    GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/1
    CAPABILITIES.CARRIER-DETECT:            yes
    CAPABILITIES.SPEED:                     100 Mb/s
    CAPABILITIES.IS-SOFTWARE:               no
    WIRED-PROPERTIES.CARRIER:               on
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1}
    CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   0885c1bb-d55d-4c63-b007-d8db0384b9d9 | Wired connection 1
    IP4.ADDRESS[1]:                         192.168.1.2/24
    IP4.GATEWAY:                            192.168.1.1
    IP4.DNS[1]:                             192.168.1.1
    IP4.DOMAIN[1]:                          domain.name
    DHCP4.OPTION[1]:                        network_number = 192.168.1.0
    DHCP4.OPTION[2]:                        requested_domain_search = 1
    DHCP4.OPTION[3]:                        requested_host_name = 1
    DHCP4.OPTION[4]:                        requested_broadcast_address = 1
    DHCP4.OPTION[5]:                        requested_domain_name = 1
    DHCP4.OPTION[6]:                        requested_rfc3442_classless_static_routes = 1
    DHCP4.OPTION[7]:                        requested_time_offset = 1
    DHCP4.OPTION[8]:                        expiry = 1448941345
    DHCP4.OPTION[9]:                        domain_name = domain.name
    DHCP4.OPTION[10]:                       next_server = 0.0.0.0
    DHCP4.OPTION[11]:                       broadcast_address = 192.168.1.255
    DHCP4.OPTION[12]:                       dhcp_message_type = 5
    DHCP4.OPTION[13]:                       requested_subnet_mask = 1
    DHCP4.OPTION[14]:                       routers = 192.168.1.1
    DHCP4.OPTION[15]:                       dhcp_lease_time = 86400
    DHCP4.OPTION[16]:                       ip_address = 192.168.1.2
    DHCP4.OPTION[17]:                       requested_static_routes = 1
    DHCP4.OPTION[18]:                       requested_interface_mtu = 1
    DHCP4.OPTION[19]:                       requested_domain_name_servers = 1
    DHCP4.OPTION[20]:                       domain_name_servers = 192.168.1.1
    DHCP4.OPTION[21]:                       requested_wpad = 1
    DHCP4.OPTION[22]:                       requested_netbios_name_servers = 1
    DHCP4.OPTION[23]:                       requested_ms_classless_static_routes = 1
    DHCP4.OPTION[24]:                       requested_routers = 1
    DHCP4.OPTION[25]:                       subnet_mask = 255.255.255.0
    DHCP4.OPTION[26]:                       requested_ntp_servers = 1
    DHCP4.OPTION[27]:                       requested_netbios_scope = 1
    DHCP4.OPTION[28]:                       dhcp_server_identifier = 192.168.1.1
    IP6.ADDRESS[1]:                         fe80::<IP6 'eno1' [IF]>/64
    IP6.GATEWAY:                            fe80::56b8:aff:fe47:7dc4
    
    GENERAL.DEVICE:                         wlo1
    GENERAL.TYPE:                           wifi
    GENERAL.NM-TYPE:                        NMDeviceWifi
    GENERAL.VENDOR:                         Realtek Semiconductor Co., Ltd.
    GENERAL.PRODUCT:                        RTL8723BE PCIe Wireless Network Adapter
    GENERAL.DRIVER:                         rtl8723be
    GENERAL.DRIVER-VERSION:                 4.2.0-16-generic
    GENERAL.FIRMWARE-VERSION:               N/A
    GENERAL.HWADDR:                         <MAC 'wlo1' [IF]>
    GENERAL.MTU:                            0
    GENERAL.STATE:                          100 (connected)
    GENERAL.REASON:                         0 (No reason given)
    GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.2/0000:08:00.0/net/wlo1
    GENERAL.IP-IFACE:                       wlo1
    GENERAL.IS-SOFTWARE:                    no
    GENERAL.NM-MANAGED:                     yes
    GENERAL.AUTOCONNECT:                    yes
    GENERAL.FIRMWARE-MISSING:               no
    GENERAL.PHYS-PORT-ID:                   --
    GENERAL.CONNECTION:                     D-Link
    GENERAL.CON-UUID:                       083e68f1-6590-4ca6-9a40-4932d3ec7317
    GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/0
    CAPABILITIES.CARRIER-DETECT:            no
    CAPABILITIES.SPEED:                     150 Mb/s
    CAPABILITIES.IS-SOFTWARE:               no
    WIFI-PROPERTIES.WEP:                    yes
    WIFI-PROPERTIES.WPA:                    yes
    WIFI-PROPERTIES.WPA2:                   yes
    WIFI-PROPERTIES.TKIP:                   yes
    WIFI-PROPERTIES.CCMP:                   yes
    WIFI-PROPERTIES.AP:                     yes
    WIFI-PROPERTIES.ADHOC:                  yes
    WIFI-PROPERTIES.2GHZ:                   yes
    WIFI-PROPERTIES.5GHZ:                   no
    CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
    CONNECTIONS.AVAILABLE-CONNECTIONS[1]:   083e68f1-6590-4ca6-9a40-4932d3ec7317 | D-Link
    IP4.ADDRESS[1]:                         192.168.1.7/24
    IP4.GATEWAY:                            192.168.1.1
    IP4.ROUTE[1]:                           dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
    IP4.DNS[1]:                             192.168.1.1
    IP4.DOMAIN[1]:                          domain.name
    DHCP4.OPTION[1]:                        network_number = 192.168.1.0
    DHCP4.OPTION[2]:                        requested_domain_search = 1
    DHCP4.OPTION[3]:                        requested_host_name = 1
    DHCP4.OPTION[4]:                        requested_broadcast_address = 1
    DHCP4.OPTION[5]:                        requested_domain_name = 1
    DHCP4.OPTION[6]:                        requested_rfc3442_classless_static_routes = 1
    DHCP4.OPTION[7]:                        requested_time_offset = 1
    DHCP4.OPTION[8]:                        expiry = 1448941273
    DHCP4.OPTION[9]:                        domain_name = domain.name
    DHCP4.OPTION[10]:                       next_server = 0.0.0.0
    DHCP4.OPTION[11]:                       broadcast_address = 192.168.1.255
    DHCP4.OPTION[12]:                       dhcp_message_type = 5
    DHCP4.OPTION[13]:                       requested_subnet_mask = 1
    DHCP4.OPTION[14]:                       routers = 192.168.1.1
    DHCP4.OPTION[15]:                       dhcp_lease_time = 86400
    DHCP4.OPTION[16]:                       ip_address = 192.168.1.7
    DHCP4.OPTION[17]:                       requested_static_routes = 1
    DHCP4.OPTION[18]:                       requested_interface_mtu = 1
    DHCP4.OPTION[19]:                       requested_domain_name_servers = 1
    DHCP4.OPTION[20]:                       domain_name_servers = 192.168.1.1
    DHCP4.OPTION[21]:                       requested_wpad = 1
    DHCP4.OPTION[22]:                       requested_netbios_name_servers = 1
    DHCP4.OPTION[23]:                       requested_ms_classless_static_routes = 1
    DHCP4.OPTION[24]:                       requested_routers = 1
    DHCP4.OPTION[25]:                       subnet_mask = 255.255.255.0
    DHCP4.OPTION[26]:                       requested_ntp_servers = 1
    DHCP4.OPTION[27]:                       requested_netbios_scope = 1
    DHCP4.OPTION[28]:                       dhcp_server_identifier = 192.168.1.1
    IP6.ADDRESS[1]:                         fe80::<IP6 'wlo1' [IF]>/64
    IP6.GATEWAY:                            fe80::56b8:aff:fe47:7dc4
    
    SSID    BSSID              MODE   CHAN  FREQ      RATE       SIGNAL  BARS  SECURITY  ACTIVE  * 
    D-Link  <MAC 'D-Link' [AC1]>  Infra  1     2412 MHz  54 Mbit/s  54      ▂▄__  WPA2      yes     * 
    
    ##### NetworkManager.state ##############
    
    [main]
    NetworkingEnabled=true
    WirelessEnabled=true
    WWANEnabled=true
    WimaxEnabled=true
    
    ##### NetworkManager.conf ###############
    
    [main]
    plugins=ifupdown,keyfile,ofono
    dns=dnsmasq
    
    [ifupdown]
    managed=false
    
    ##### NetworkManager profiles ###########
    
    [[/etc/NetworkManager/system-connections/D-Link]] (600 root)
    [connection] id=D-Link | type=wifi | permissions=
    [wifi] mac-address=<MAC 'wlo1' [IF]> | mac-address-blacklist= | ssid=D-Link
    [ipv4] method=auto
    [ipv6] method=auto
    
    ##### iw reg get ########################
    
    Region: Asia/Kolkata (based on set time zone)
    
    country 00: DFS-UNSET
    	(2402 - 2472 @ 40), (N/A, 20), (N/A)
    	(2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
    	(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
    	(5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
    	(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
    	(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
    	(5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
    	(57240 - 63720 @ 2160), (N/A, 0), (N/A)
    
    ##### iwlist channels ###################
    
    eno1      no frequency information.
    
    lo        no frequency information.
    
    wlo1      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 #######################
    
    eno1      Interface doesn't support scanning.
    
    lo        Interface doesn't support scanning.
    
    Channel occupancy:
    
          1   APs on   Frequency:2.412 GHz (Channel 1)
    
    wlo1      Scan completed :
              Cell 01 - Address: <MAC 'D-Link' [AC1]>
                        Channel:1
                        Frequency:2.412 GHz (Channel 1)
                        Quality=42/70  Signal level=-68 dBm  
                        Encryption key:on
                        ESSID:"D-Link"
                        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=00000000360a94ad
                        Extra: Last beacon: 68ms 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/4.2.0-16-generic/updates/dkms/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:     1A35907BCCEF84FE28F988D
    depends:        rtlwifi,rtl_pci,btcoexist,mac80211
    vermagic:       4.2.0-16-generic SMP mod_unload modversions 
    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)
    parm:           disable_watchdog:Set to 1 to disable the watchdog (default 0)
     (bool)
    
    [rtl_pci]
    filename:       /lib/modules/4.2.0-16-generic/updates/dkms/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:     1BFD9F9E9693CB93908149A
    depends:        mac80211,rtlwifi
    vermagic:       4.2.0-16-generic SMP mod_unload modversions 
    
    [rtlwifi]
    filename:       /lib/modules/4.2.0-16-generic/updates/dkms/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:     9A94C1A2CE5E02B2F239836
    depends:        mac80211,cfg80211
    vermagic:       4.2.0-16-generic SMP mod_unload modversions 
    
    [mac80211]
    filename:       /lib/modules/4.2.0-16-generic/kernel/net/mac80211/mac80211.ko
    license:        GPL
    description:    IEEE 802.11 subsystem
    srcversion:     C9DB66EC5B332CC610F266D
    depends:        cfg80211
    intree:         Y
    vermagic:       4.2.0-16-generic SMP mod_unload modversions 
    signer:         Build time autogenerated kernel key
    sig_key:        6A:1C:9C:21:F0:4A:B8:6F:D1:D7:CE:D6:CA:11:35:40:FC:8E:35:B6
    sig_hashalgo:   sha512
    parm:           minstrel_vht_only:Use only VHT rates when VHT is supported by sta. (bool)
    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/4.2.0-16-generic/kernel/net/wireless/cfg80211.ko
    description:    wireless configuration support
    license:        GPL
    author:         Johannes Berg
    srcversion:     1F1A25B2E9C847110BD9ED9
    depends:        
    intree:         Y
    vermagic:       4.2.0-16-generic SMP mod_unload modversions 
    signer:         Build time autogenerated kernel key
    sig_key:        6A:1C:9C:21:F0:4A:B8:6F:D1:D7:CE:D6:CA:11:35:40:FC:8E:35:B6
    sig_hashalgo:   sha512
    parm:           ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
    parm:           cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
    
    ##### module parameters #################
    
    [rtl8723be]
    debug: 0
    disable_watchdog: N
    fwlps: N
    ips: N
    msi: N
    swenc: N
    swlps: N
    
    [mac80211]
    beacon_loss_count: 7
    ieee80211_default_rc_algo: minstrel_ht
    max_nullfunc_tries: 2
    max_probe_tries: 5
    minstrel_vht_only: Y
    probe_wait_ms: 500
    
    [cfg80211]
    cfg80211_disable_40mhz_24ghz: N
    ieee80211_regdom: 00
    
    ##### /etc/modules ######################
    
    ##### modprobe options ##################
    
    [/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/blacklist-rare-network.conf]
    alias net-pf-3 off
    alias net-pf-6 off
    alias net-pf-9 off
    alias net-pf-11 off
    alias net-pf-12 off
    alias net-pf-19 off
    alias net-pf-21 off
    alias net-pf-36 off
    
    [/etc/modprobe.d/iwlwifi.conf]
    remove iwlwifi \
    (/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
    && /sbin/modprobe -r mac80211
    
    [/etc/modprobe.d/mlx4.conf]
    softdep mlx4_core post: mlx4_en
    
    [/etc/modprobe.d/rtl8723be.conf]
    options rtl8723be fwlps=N ips=N
    
    ##### rc.local ##########################
    
    exit 0
    
    ##### pm-utils ##########################
    
    ##### udev rules ########################
    
    grep: /etc/udev/rules.d/*net*.rules: No such file or directory
    
    ##### dmesg #############################
    
    [   13.839597] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
    [   13.839600] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
    [   13.921244] rtlwifi: module verification failed: signature and/or required key missing - tainting kernel
    [   14.494860] Using firmware rtlwifi/rtl8723befw.bin
    [   14.526478] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
    [   14.526673] rtlwifi: wireless switch is on
    [   14.560532] rtl8723be 0000:08:00.0 wlo1: renamed from wlan0
    [   28.188399] IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready
    [   28.261144] r8169 0000:09:00.0 eno1: link down
    [   28.261193] IPv6: ADDRCONF(NETDEV_UP): eno1: link is not ready
    [   28.263387] IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready (repeated 3 times)
    [   56.913764] wlo1: authenticate with <MAC 'D-Link' [AC1]>
    [   56.925700] wlo1: send auth to <MAC 'D-Link' [AC1]> (try 1/3)
    [   56.928347] wlo1: authenticated
    [   56.931108] wlo1: associate with <MAC 'D-Link' [AC1]> (try 1/3)
    [   56.936273] wlo1: RX AssocResp from <MAC 'D-Link' [AC1]> (capab=0x411 status=0 aid=1)
    [   56.937319] wlo1: associated
    [   56.937328] IPv6: ADDRCONF(NETDEV_CHANGE): wlo1: link becomes ready
    [  131.077221] r8169 0000:09:00.0 eno1: link up
    [  131.077231] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready
    
    ########## wireless info END ############
    Last edited by jinsujais; November 30th, 2015 at 01:13 PM.

  2. #2
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    7,367
    Distro
    Ubuntu Gnome 14.04 Trusty Tahr

    Re: Realtek RTL8723BE weak wifi signal

    Try these module parameters:

    Code:
    echo "options rtl8723be swenc=1 fwlps=0 ips=0" | sudo tee /etc/modprobe.d/rtl8723be.conf
    echo 'KERNEL=="wlo1", RUN+="/sbin/iwconfig wlo1 txpower 18"' | sudo tee -a /etc/udev/rules.d/75-wlan.rules
    Reboot

  3. #3
    Join Date
    Mar 2008
    Location
    India
    Beans
    18
    Distro
    Xubuntu 15.10 Wily Werewolf

    Re: Realtek RTL8723BE weak wifi signal

    Tried those parameters. Still, signal strength is weak, and I'm not able to get the wifi when I move away from modem.
    Please help.

    It seems, HP use Realtek adapter for both WiFi and Bluetooth, and by default, Bluetooth is working perfectly well in my laptop. I tried to disable Bluetooth using the method showed in: http://itsfoss.com/turn-off-bluetoot...-ubuntu-14-04/
    But when I restart the laptop, Bluetooth is automatically enabled by default.
    I don't know what is happening, but I assume that Bluetooth overrides WiFi.

    rtl8723befw.bin is already there in /lib/firmware/rtlwifi/, and I tried echo "options rtl8723be swenc=1 fwlps=0 ips=0" | sudo tee /etc/modprobe.d/rtl8723be.conf

    What to do to make WiFi working, just like when it was on Windows?
    Last edited by howefield; January 9th, 2016 at 12:31 AM.

  4. #4
    Join Date
    Mar 2015
    Location
    Great Plains
    Beans
    1,208
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Realtek RTL8723BE weak wifi signal

    An alternative solution would be just to try a known, and tested Linux compatible wifi adapter. Panda provides several of these - - starting at about $10 usd for the nano size dongle and slightly more for the full stick with high gain antenna. Works very well in all versions of Ubuntu that I've tried, just "plug & play". The one I'm using now in my Acer Laptop is the Panda Ultra 150n.

    I've built wireless modules from source . . . but then they require recompiling upon kernel updates, so I prefer the simplest fix.

    Here's a link to Panda (but can pick these up at Amazon, NewEgg etc.) http://www.pandawireless.com/

  5. #5
    Join Date
    Aug 2005
    Location
    South Carolina, USA
    Beans
    24,252
    Distro
    Ubuntu 18.04 Bionic Beaver

    Re: Realtek RTL8723BE weak wifi signal

    I suggest you try updating the driver:
    Code:
    sudo add-apt-repository ppa:hanipouspilot/rtlwifi
    sudo apt-get update
    sudo apt-get install rtlwifi-new-dkms linux-firmware
    Also, 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.

    Reboot and tell us if the performance is improved.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D.

  6. #6
    Join Date
    Mar 2008
    Location
    India
    Beans
    18
    Distro
    Xubuntu 15.10 Wily Werewolf

    Re: Realtek RTL8723BE weak wifi signal

    Did as per the instructions. Set IN instead of IS, for India.
    But issue still exists. Able to connect wifi only when I keep laptop close to modem.

  7. #7
    Join Date
    Apr 2012
    Beans
    Hidden!

    Re: Realtek RTL8723BE weak wifi signal

    Hi, since your wifi does not function correctly on 15.10
    i recommend you try the stable LTS long term support 14.04
    15.10 is only supported another 6 ..9 months
    14.04 is supported until almost 2019.
    beyond that you could try a usb type wifi.
    good luck
    Craving anchovy, herring and squid pizza.....with clam sauce

  8. #8
    Join Date
    Mar 2015
    Location
    Great Plains
    Beans
    1,208
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Realtek RTL8723BE weak wifi signal

    Just to verify, you did the install as listed by Chili555? Including the reboot so system uses mod'd kernel?

    The LTS solution seems worth trying also.

    Finally, you can build the driver from source: see post#2 http://ubuntuforums.org/showthread.php?t=2299578
    Last edited by Geoffrey_Arndt; November 30th, 2015 at 09:55 PM. Reason: more info

  9. #9
    Join Date
    Nov 2015
    Beans
    29

    Re: Realtek RTL8723BE weak wifi signal

    I have exactly the same problem on an HP Stream 11-r010 Cloudbook with an RTL8723BE chipset. I reported my problem in the wrong forum (http://ubuntuforums.org/showthread.p...0#post13397470) only to discover that I should have posted here. Also, I was unaware that the problem I am having is the "reduced range problem". I, too, need to sit next to the WiFi antenna to get any reception at all! By the way, I started testing with Mint 17.2 (equivalent to Ubuntu 14.04) but just installed Xubuntu 15.10. I am using a D-Link DUB-E100 USB to ethernet converter to get connectivity to do some debug. Previously (with Mint 17.2) I tried downloading the rtlwifi_new files and recompiling, etc., but still I can't see beyond a few feet. There must be an answer to this...

    By the way, with a fresh install of Xubuntu 15.10, I execute the wifi script, and my results are pasted at: http://paste.ubuntu.com/13588280/ (pretty cool feature!).
    Last edited by Jerry_Gorland; December 1st, 2015 at 02:12 AM. Reason: Added pastebin

  10. #10
    Join Date
    Mar 2008
    Location
    India
    Beans
    18
    Distro
    Xubuntu 15.10 Wily Werewolf

    Re: Realtek RTL8723BE weak wifi signal

    yes, i did exactly as what is told by Chili555 and Praseodym instructed.
    do i need to change my OS to 14.04, as i installed 15.10, hoping to install when 16.04 LTS is released. when i googled, kernel 4.2 is updated with realtek drivers by default.

    lspci shows this as the device of laptop :
    Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    DeviceName: Realtek RTL8723BE 802.11b/g/n 1x1Wi-Fi + BT4.0 Combo Adapter
    Subsystem: Hewlett-Packard Company Device [103c:804c]

    Realtek RTL8723BE 802.11b/g/n 1x1Wi-Fi + BT4.0 Combo Adapter means, wifi and bluetooth together, right?
    Bluetooth is working perfectly well in the system, and i can't find out what happened to wifi.

    please please help me.

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