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[Bug 971809] Re: 168c:0032 Wifi connection unstable -- Atheros AR9485 ath9k

 

Hmm. This bug is associated with the upstream bug
https://bugzilla.kernel.org/show_bug.cgi?id=49201 which was fixed. I can
also confirm than on my Zenbook UX31E starting from the 3.10 kernel and
also with the 3.11 kernel in Ubuntu 13.10, WLAN is working well in many
places where it was completely unusable before.

It's probable there are different kind of problems in different networks
(like WPA2 Enterprise), but at least the one identified upstream which
broke connections, gave poor connectivity for many was fixed.

I'd suggest filing a new bug for the issue you're seeing, since
otherwise this bug would become quite confusing to handle with multiple
different upstream bugs. If you check
https://bugzilla.kernel.org/buglist.cgi?quicksearch=ar9485 , there is
for example the bug 62381 to which the new Launchpad bug could be
associated if it has a fitting description.

I think this bug should remain marked Fix Released unless Guillaume (the
bug reporter) finds that the bug he tracked with upstream has really
regressed in the 3.11 at some point.

It is anyway an interesting data point that you had the bug fixed by
using the wireless tree snapshots, but somehow are seeing still a
problem with 3.11 where all those fixes should be included.

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https://bugs.launchpad.net/bugs/971809

Title:
  168c:0032 Wifi connection unstable -- Atheros AR9485 ath9k

Status in The Linux Kernel:
  Fix Released
Status in NetworkManager:
  Invalid
Status in “linux” package in Ubuntu:
  Fix Released

Bug description:
  Using Ubuntu 12.04 beta 2, wifi connection is really unstable on my Asus UX31.
  At the same place, with Windows 7, the connection is stable.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: network-manager 0.9.4.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-21.34-generic 3.2.13
  Uname: Linux 3.2.0-21-generic x86_64
  ApportVersion: 2.0-0ubuntu2
  Architecture: amd64
  Date: Mon Apr  2 20:58:59 2012
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  ProcEnviron:
   TERM=xterm
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-con: Error: command ['nmcli', '-f', 'all', 'con'] failed with exit code 1: Error: Can't obtain connections: settings service is not running.
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu2
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  gfmichaud   1727 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xdfe00000 irq 53'
     Mixer name	: 'Intel CougarPoint HDMI'
     Components	: 'HDA:10ec0269,10431427,00100100 HDA:80862805,80860101,00100000'
     Controls      : 18
     Simple ctrls  : 8
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=384ec156-d35e-4d52-9404-4180b3520ddb
  IfupdownConfig:
   auto lo
   iface lo inet loopback
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  IpRoute:
   default via 192.168.0.254 dev eth1  proto static 
   169.254.0.0/16 dev eth1  scope link  metric 1000 
   192.168.0.0/24 dev eth1  proto kernel  scope link  src 192.168.0.30  metric 2
  MachineType: ASUSTeK Computer Inc. UX31E
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
   WimaxEnabled=true
  Package: network-manager 0.9.4.0-0ubuntu2
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=3698f1d7-5c60-473c-b752-c98e427883f7 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-23-generic N/A
   linux-backports-modules-3.2.0-23-generic  N/A
   linux-firmware                            1.78
  StagingDrivers: rts5139 mei
  Tags:  precise staging precise
  Uname: Linux 3.2.0-23-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo
  dmi.bios.date: 01/20/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX31E.211
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX31E
  dmi.board.vendor: ASUSTeK Computer Inc.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK Computer Inc.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX31E.211:bd01/20/2012:svnASUSTeKComputerInc.:pnUX31E:pvr1.0:rvnASUSTeKComputerInc.:rnUX31E:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
  dmi.product.name: UX31E
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK Computer Inc.
  nmcli-con:
   NAME                      UUID                                   TYPE              TIMESTAMP    TIMESTAMP-REAL                     AUTOCONNECT   READONLY   DBUS-PATH                                 
   AndroidGM                 52f72e54-c826-4a4a-9619-3fef08de5496   802-11-wireless   1333888153   dim. 08 avril 2012 14:29:13 CEST   yes           no         /org/freedesktop/NetworkManager/Settings/1
   CNGM_WEP                  712368a2-4545-4f12-b2cc-f5ecc2394ef9   802-11-wireless   1334253900   jeu. 12 avril 2012 20:05:00 CEST   yes           no         /org/freedesktop/NetworkManager/Settings/0
  nmcli-dev:
   DEVICE     TYPE              STATE         DBUS-PATH                                  
   eth1       802-11-wireless   connected     /org/freedesktop/NetworkManager/Devices/0
  nmcli-nm:
   RUNNING         VERSION    STATE           NET-ENABLED   WIFI-HARDWARE   WIFI       WWAN-HARDWARE   WWAN      
   running         0.9.4.0    connected       enabled       enabled         enabled    enabled         disabled

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