kernel-packages team mailing list archive

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

Alexander List, this bug was reported a while ago and there hasn't been
any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, please just make a comment to this.

If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.13-rc6

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags added: bios-outdated-1.40 needs-wifi-debug

** Changed in: linux
   Importance: High => Undecided

** Changed in: linux
       Status: Confirmed => New

** Changed in: linux
 Remote watch: bugzilla.intellinuxwireless.org/ #2314 => None

** Summary changed:

- 8086:4238 iwlwifi drops connection when using 802.11n
+ 8086:4238 [Lenovo ThinkPad X201] iwlwifi drops connection when using 802.11n

** Attachment removed: "version.log"
   https://bugs.launchpad.net/linux/+bug/1034740/+attachment/3253916/+files/version.log

** Attachment removed: "version.log"
   https://bugs.launchpad.net/linux/+bug/1034740/+attachment/3253938/+files/version.log

** Attachment removed: "lspci-vnvn.log"
   https://bugs.launchpad.net/linux/+bug/1034740/+attachment/3253939/+files/lspci-vnvn.log

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1034740

Title:
  8086:4238 [Lenovo ThinkPad X201] iwlwifi drops connection when using
  802.11n

Status in The Linux Kernel:
  New
Status in “linux” package in Ubuntu:
  Incomplete
Status in Fedora:
  Unknown

Bug description:
  Symptoms: After a few minutes, the WiFi connection to my home router
  first becomes slow (packet loss), then entirely unusable. NetWork
  manager still shows the connection as up and working.

  dmesg shows messages like these:
  Aug  9 06:17:16 thinkpad kernel: [ 5026.531127] iwlwifi 0000:02:00.0: Tx aggrega
  tion enabled on ra = b0:48:7a:d6:91:50 tid = 6

  WORKAROUND: rfkill to disable and enable WiFi, or add:
  options iwlwifi 11n_disable=1

  to /etc/modprobe.d/iwlwifi.conf

  However, this means that all my network connections will only run in 802.11a/g mode, which is undesirably slow. Other people using MacOS in my place don't observe any issues, so I can rule out the router(s) as the culprits.
  Hardware: 02:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)
  Routers: TP-Link WR1043ND, WR2543ND using OpenWRT trunk.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-27-generic 3.2.0-27.43
  ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
  Uname: Linux 3.2.0-27-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC29: alex       2261 F.... xfce4-volumed
   /dev/snd/controlC0:  alex       2250 F.... pulseaudio
                        alex       2261 F.... xfce4-volumed
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf2520000 irq 44'
     Mixer name	: 'Intel IbexPeak HDMI'
     Components	: 'HDA:14f15069,17aa2155,00100302 HDA:80862804,17aa21b5,00100000'
     Controls      : 14
     Simple ctrls  : 6
  Card29.Amixer.info:
   Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6QHT33WW-1.14'
     Mixer name	: 'ThinkPad EC 6QHT33WW-1.14'
     Components	: ''
     Controls      : 1
     Simple ctrls  : 1
  Card29.Amixer.values:
   Simple mixer control 'Console',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Thu Aug  9 12:24:19 2012
  HibernationDevice: RESUME=UUID=9fee4cfb-53b9-43d7-8425-1666aff145c4
  InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: LENOVO 3626A14
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-27-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-27-generic N/A
   linux-backports-modules-3.2.0-27-generic  N/A
   linux-firmware                            1.79
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/26/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6QET69WW (1.39 )
  dmi.board.name: 3626A14
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6QET69WW(1.39):bd04/26/2012:svnLENOVO:pn3626A14:pvrThinkPadX201:rvnLENOVO:rn3626A14:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3626A14
  dmi.product.version: ThinkPad X201
  dmi.sys.vendor: LENOVO

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