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[rmcd <1337373@xxxxxxxxxxxxxxxxxx>]

This problem has not occurred since, I believe,  the -32 kernel upgrade.
(I have to be tentative because it was always intermittent, but it did
usually occur overnight and I have had periods of 1-2 days when the
screen was locked without incident.)

Earlier this week I installed the new bios:

9SKT81AUS
06/17/2014

and the problem has not occurred since then.

Thanks!

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https://bugs.launchpad.net/bugs/1337373

Title:
  Ubuntu 14.04 blank screen after wakeup from   sleep

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  This appears to be the same bug others have reported --- lock screen
  is used, the display goes blank, and then the display remains black
  after a key or the mouse is touched.

  For me, this only occurs after the display has been blanked for a
  period of some hours (typically overnight).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-30-generic 3.13.0-30.54
  ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
  Uname: Linux 3.13.0-30-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  rmcd       2307 F.... pulseaudio
   /dev/snd/controlC0:  rmcd       2307 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Thu Jul  3 09:59:56 2014
  HibernationDevice: RESUME=UUID=efde90cc-bb24-43bb-9662-8886fda1ebc3
  InstallationDate: Installed on 2014-04-24 (69 days ago)
  InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  MachineType: LENOVO 3212C9U
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic root=UUID=c84e1a00-9bad-4918-9f90-8a80deb0b12b ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-30-generic N/A
   linux-backports-modules-3.13.0-30-generic  N/A
   linux-firmware                             1.127.4
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/31/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 9SKT72AUS
  dmi.board.name: MAHOBAY
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnLENOVO:bvr9SKT72AUS:bd07/31/2013:svnLENOVO:pn3212C9U:pvrThinkCentreM92p:rvnLENOVO:rnMAHOBAY:rvrNODPK:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: 3212C9U
  dmi.product.version: ThinkCentre M92p
  dmi.sys.vendor: LENOVO

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