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["Edward Z. Yang" <ezyang@xxxxxxxxxxxxxxx>]

I regretfully report that I can reproduce the error, with the same error
in dmesg.

ezyang@sabre:~$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
[sudo] password for ezyang: 
7SET39WW (1.25 )
03/22/2011

Here's just the starting bit of dmesg from the re-reprod.

[ 3190.312074] iwl3945 0000:03:00.0: Error sending C_POWER_TBL: time out after 500ms.
[ 3190.312083] iwl3945 0000:03:00.0: set power fail, ret = -110
[ 3191.844055] iwl3945 0000:03:00.0: Queue 4 stuck for 2500 ms.
[ 3191.844063] iwl3945 0000:03:00.0: On demand firmware reload
[ 3191.880643] ieee80211 phy0: Hardware restart was requested
[ 3191.929397] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 3191.929402] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 3191.976108] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 3191.976112] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 3192.022807] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 3192.022811] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 3192.069513] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 3192.069516] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 3192.116219] iwl3945 0000:03:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
[ 3192.116222] iwl3945 0000:03:00.0: Unable to set up bootstrap uCode: -5
[ 3192.152637] iwl3945 0000:03:00.0: Unable to initialize device after 5 attempts.

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https://bugs.launchpad.net/bugs/1461738

Title:
  iwl3945 on X61T crashes with Error sending C_POWER_TBL: time out after
  500ms

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After using wireless for some period of time, it stops working. dmesg
  report is attached. Rebooting the machine makes the wireless driver
  work again (for a little bit anyway). I haven't checked if it's
  related to suspend/resume, but I use this a lot. I can try bisecting
  for a kernel which doesn't have this problem, although between when I
  started having problems, I upgraded to Vivid (which didn't fix the
  problem.)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-18-generic 3.19.0-18.18
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  Uname: Linux 3.19.0-18-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC0D0p:   ezyang     3167 F...m pulseaudio
   /dev/snd/controlC0:  ezyang     3167 F.... pulseaudio
  Date: Wed Jun  3 20:09:04 2015
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=/dev/mapper/sabre-swap
  InstallationDate: Installed on 2013-11-21 (560 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 7762K3U
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-18-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-18-generic N/A
   linux-backports-modules-3.19.0-18-generic  N/A
   linux-firmware                             1.143.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-05-29 (6 days ago)
  dmi.bios.date: 02/21/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7SET25WW (1.11 )
  dmi.board.name: 7762K3U
  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:bvr7SET25WW(1.11):bd02/21/2008:svnLENOVO:pn7762K3U:pvrThinkPadX61Tablet:rvnLENOVO:rn7762K3U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7762K3U
  dmi.product.version: ThinkPad X61 Tablet
  dmi.sys.vendor: LENOVO

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