kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags removed: kernel-bug-exists-upstream-4.1-rc5
** Tags added: kernel-bug-exists-upstream-4.5

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https://bugs.launchpad.net/bugs/1451233

Title:
  10ec:b723 [Lenovo B5400] Realtek RTL8723BE drops connection until
  reboot

Status in linux package in Ubuntu:
  Triaged

Bug description:
  I have a Lenovo B5400 laptop with RTL8723BE wireless module. Using 802.11n the internet connection constantly getting lost after a random duration (usually after 20-30 minutes). The NetworkManager applet does not recognize it (still looks like i have a connection), but when I try do disconnect and connect again, there is only one useful information I can find in dmesg:
  "wlan0: deauthenticating from [ap mac address] by local choice (Reason: 3=DEAUTH_LEAVING)"
  Reinserting the driver (modprobe -r rtl8723be and modprobe rtl8723) used to be my only workaround, but it does not work anymore and now I have to reboot.

  Router Manufacturer: EDIMAX
  Model: BR-6214K
  Firmware version: 1.40 2008/11/03 08:33:04

  Switching to 802.11g (54Mb/s) shows a small performance improvement
  while browsing websites. However there are still random "ping jumps"
  and the connection still drops (maybe 1-2 minutes later than usual at
  least).

  The following improves performance, but I am still encountering some minor performance issues while playing online games (random lag spikes):
  sudo nano /etc/modprobe.d/rtl8723be.conf
  options rtl8723be ips=0 fwlps=0

  ---
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  pk         1907 F.... pulseaudio
   /dev/snd/controlC0:  pk         1907 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=4ce160f4-029c-4fd5-ba3f-254c6e3e33dd
  InstallationDate: Installed on 2015-05-24 (0 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: LENOVO 20278
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-38-generic root=UUID=a9da170f-b86b-434f-910b-00929ceb8420 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-38.52~14.04.1-generic 3.16.7-ckt10
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-38-generic N/A
   linux-backports-modules-3.16.0-38-generic  N/A
   linux-firmware                             1.127.12
  Tags:  trusty
  Uname: Linux 3.16.0-38-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 03/03/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: J7ET61WW (2.06 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20278  QB0
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrJ7ET61WW(2.06):bd03/03/2014:svnLENOVO:pn20278:pvrB5400:rvnLENOVO:rn20278QB0:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20278
  dmi.product.version: B5400
  dmi.sys.vendor: LENOVO

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