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[sgon00 <sgon00@xxxxxxx>]

Any updates on this? I met exact same problem. I am running ubuntu 14.04
LTS on lenovo(thinkpad) X201. The network card is really unstable and
keep turning off randomly. I have to keep rebooting my laptop to fix
this issue !!!!

** Changed in: linux (Ubuntu)
       Status: Expired => New

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https://bugs.launchpad.net/bugs/1180787

Title:
  Thinkpad X201 iwlwifi module stopped working in latest -21 kernel (OK
  in -19)

Status in linux package in Ubuntu:
  New

Bug description:
  The wifi on my Thinkpad X201 has stopped working in Ubuntu 13.04 with
  the latest 3.8.0-21-generic kernel (it is fine in -19 and earlier).

  Errors messages on loading module from /var/log/kern.log:

  May 16 13:35:44 X201 kernel: [   22.892644] iwlwifi 0000:02:00.0: L1 Enabled; Disabling L0S
  May 16 13:35:44 X201 kernel: [   22.899826] iwlwifi 0000:02:00.0: Radio type=0x1-0x3-0x1
  May 16 13:35:45 X201 kernel: [   23.256348] iwlwifi 0000:02:00.0: L1 Enabled; Disabling L0S
  May 16 13:35:45 X201 kernel: [   23.263029] iwlwifi 0000:02:00.0: Radio type=0x1-0x3-0x1
  May 16 13:35:45 X201 kernel: [   23.407800] tp_smapi 0.41 loading...
  May 16 13:35:45 X201 kernel: [   23.407905] tp_smapi successfully loaded (smapi_port=0xb2).
  May 16 13:35:46 X201 kernel: [   24.388325] iwlwifi 0000:02:00.0: Failed to start RT ucode: -110
  May 16 13:35:46 X201 kernel: [   24.388654] iwlwifi 0000:02:00.0: Unable to initialize device.
  --- 
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC29', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA:
   country GB:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20)
   	(5250 - 5330 @ 40), (N/A, 20), DFS
   	(5490 - 5710 @ 40), (N/A, 27), DFS
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=49d4f2dd-e03a-4d98-b2ca-8a26f08ee954
  InstallationDate: Installed on 2012-10-04 (223 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120926)
  Lsusb:
   Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 002 Device 004: ID 05c6:9205 Qualcomm, Inc.
  MachineType: LENOVO 3680WXQ
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-21-generic root=UUID=be2980a4-c13a-4f50-8747-4eff0a318858 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-21-generic N/A
   linux-backports-modules-3.8.0-21-generic  N/A
   linux-firmware                            1.106
  Tags:  raring
  Uname: Linux 3.8.0-21-generic x86_64
  UpgradeStatus: Upgraded to raring on 2013-04-02 (43 days ago)
  UserGroups: adm cdrom dialout dip fuse lpadmin plugdev sambashare sudo
  dmi.bios.date: 09/15/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6QET53WW (1.23 )
  dmi.board.name: 3680WXQ
  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:bvr6QET53WW(1.23):bd09/15/2010:svnLENOVO:pn3680WXQ:pvrThinkPadX201:rvnLENOVO:rn3680WXQ:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3680WXQ
  dmi.product.version: ThinkPad X201
  dmi.sys.vendor: LENOVO

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