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[Bastiaan <1336690@xxxxxxxxxxxxxxxxxx>]

Updating the BIOS fixed the problem. For now. Last time I upgraded the
BIOS it also temporarily fixed the problem. There seems to be something
that triggers this bug on and off. I guess I'll just have to wait and
file a new bug report if the problem does come back? Thanks for your
patience!

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https://bugs.launchpad.net/bugs/1336690

Title:
  [Lenovo ThinkPad W540] suspend/resume failure

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Thinkpad W540 freezes when it is suspended. Screen turns off, laptop
  fan spins up and the laptop becomes unresponsive.

  Suspend/resume worked fine for a while, then this problem started
  happening. The problem disappeared after upgrading to the latest BIOS
  . However, two days later the problem reappeared consistently. Then
  seemingly spontaneously it worked again and kept working for a couple
  of weeks until today.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-29-generic 3.13.0-29.53
  ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
  Uname: Linux 3.13.0-29-generic x86_64
  Annotation: This occured during a previous suspend and prevented it from resuming properly.
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  bastiaan   1569 F.... pulseaudio
  Date: Wed Jul  2 10:27:11 2014
  DuplicateSignature: suspend/resume:LENOVO 20BG001CMH:GNET64WW (2.12 )
  ExecutablePath: /usr/share/apport/apportcheckresume
  ExecutableTimestamp: 1400281919
  Failure: suspend/resume
  HibernationDevice: RESUME=UUID=7fc60787-3518-46bc-9699-b63ecf6ae0e0
  InstallationDate: Installed on 2014-06-06 (25 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140323)
  InterpreterPath: /usr/bin/python3.4
  MachineType: LENOVO 20BG001CMH
  ProcCmdline: /usr/bin/python3 /usr/share/apport/apportcheckresume
  ProcCwd: /
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=511010e6-07c3-4efa-80a5-d4c7449c9312 ro quiet splash acpi_backlight=vendor crashkernel=384M-:128M
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-29-generic N/A
   linux-backports-modules-3.13.0-29-generic  N/A
   linux-firmware                             1.127.2
  SourcePackage: linux
  Title: [LENOVO 20BG001CMH] suspend/resume failure
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 05/19/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GNET64WW (2.12 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20BG001CMH
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98401 Pro
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGNET64WW(2.12):bd05/19/2014:svnLENOVO:pn20BG001CMH:pvrThinkPadW540:rvnLENOVO:rn20BG001CMH:rvr0B98401Pro:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20BG001CMH
  dmi.product.version: ThinkPad W540
  dmi.sys.vendor: LENOVO

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