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

Marco, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1159145/comments/8
regarding you no longer used the card reported against. For future
reference you can manage the status of your own bugs by clicking on the
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** Tags added: bios-outdated-a10

** Summary changed:

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

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

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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:
  Invalid

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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