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[bugbot <580225@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  On my Lenovo X200 notebook (GM45 graphics), the backlight sometimes (not
  always -- maybe one fifth of the time or so) stays off after a
  suspend/resume cycle.  In other words, the system resumes properly
  except that the backlight does not turn on (screen contents are dimly
  visible, unlocking the screen, typing, etc work fine).  Doing "xset dpms
  force on" or "xset dpms force off" or pressing any of the brightness
  function keys has no effect.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xserver-xorg-video-intel 2:2.9.1-3ubuntu5
  ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
  Uname: Linux 2.6.32-22-generic x86_64
  Architecture: amd64
  Date: Thu May 13 14:41:22 2010
  DkmsStatus: Error: [Errno 2] No such file or directory
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
  MachineType: LENOVO 7458B18
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=2430964c-21ce-442f-819c-e1fc1596711f ro quiet splash
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: xserver-xorg-video-intel
  dmi.bios.date: 03/10/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6DET63WW (3.13 )
  dmi.board.name: 7458B18
  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:bvr6DET63WW(3.13):bd03/10/2010:svnLENOVO:pn7458B18:pvrThinkPadX200:rvnLENOVO:rn7458B18:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 7458B18
  dmi.product.version: ThinkPad X200
  dmi.sys.vendor: LENOVO
  glxinfo: Error: [Errno 2] No such file or directory
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       x86_64
   kernel:             2.6.32-22-generic
+ 
+ [lspci]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
+     	Subsystem: Lenovo Device [17aa:20e4]

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https://bugs.launchpad.net/bugs/580225

Title:
  Backlight sometimes stays off