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[Bug 580225] [NEW] [gm45] Backlight sometimes stays off after resume on Lenovo X200

 

Public bug reported:

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

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lucid

-- 
[gm45] Backlight sometimes stays off after resume on Lenovo X200
https://bugs.launchpad.net/bugs/580225
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