kernel-packages team mailing list archive

[Margarita Manterola <marga@xxxxxxxxxx>]

I find it weird that this was marked as invalid when quite a bunch of
people reported that they were still seeing it and that it was still
present in mainline kernel.  I'm moving it to Confirmed.

Also, it's likely that this is the same as:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1281170

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

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https://bugs.launchpad.net/bugs/1159145

Title:
  8086:088e [Dell XPS 13 L322X] Centrino Advanced-N 6235 wireless
  connection crash with "iwlwifi: fail to flush all tx fifo queues"

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  After some activity, the wireless connection on my Dell XPS 13 laptop drops and I have to reboot to have it working again.
  I had this bug with ubuntu 12.04 preinstalled by Dell. I had done a 13.04 fresh install to try to solve the problem, but with last kernel (3.8.0-13.23) after some time the connection eventually drops. I can't restore it without rebooting the entire system.
  It always happens with
  [] iwlwifi 0000:01:00.0: fail to flush all tx fifo queues
  in dmesg

  The network controller is:
  01:00.0 Network controller: Intel Corporation Centrino Advanced-N 6235 (rev 24)

  I think this bug may be the same of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836250 , but may also be unrelated because:
  1) none of the solution proposed for #836250 works for me. I tried some iwlwifi module options (11n_disable=1, swcrypto=1, bt_coex_active=0) and turning off power managment (iwconfig wlan0 power off).
  2) I seems to me that the patch from Intel attached in #836250 is already included in ubuntu 3.8.0-13.23 kernel. If it is correct, then that patch does not solve my problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-13-generic 3.8.0-13.23 [modified: boot/vmlinuz-3.8.0-13-generic]
  ProcVersionSignature: Ubuntu 3.8.0-13.23-generic 3.8.3
  Uname: Linux 3.8.0-13-generic x86_64
  ApportVersion: 2.9.2-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  marco      1830 F.... pulseaudio
  Date: Sat Mar 23 15:13:09 2013
  HibernationDevice: RESUME=UUID=f25f5441-ea8c-4dfc-baf9-f4468facd9eb
  InstallationDate: Installed on 2013-03-22 (0 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130322)
  MachineType: Dell Inc. Dell System XPS L322X
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-13-generic root=UUID=e849ca22-9f72-416d-8f75-b28a8e6a29f9 ro crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-13-generic N/A
   linux-backports-modules-3.8.0-13-generic  N/A
   linux-firmware                            1.104
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/22/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0PJHXN
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: 0.1
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd01/22/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:
  dmi.product.name: Dell System XPS L322X
  dmi.sys.vendor: Dell Inc.
  --- 
  ApportVersion: 2.6.1-0ubuntu10
  Architecture: amd64
  DistroRelease: Ubuntu 12.10
  InstallationDate: Installed on 2013-03-23 (2 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  Tags:  quantal running-unity
  Uname: Linux 3.9.0-030900rc4-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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