[gm45] Backlight sometimes stays off
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-ati (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
xserver-xorg-video-intel (Ubuntu) |
Invalid
|
Medium
|
Unassigned |
Bug Description
Binary package hint: xserver-
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-
ProcVersionSign
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=
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: xserver-
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.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 7458B18
dmi.product.
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]
Changed in xserver-xorg-video-intel (Ubuntu): | |
status: | New → Confirmed |
tags: | added: backlight resume suspend |
tags: | added: gm45 |
Changed in xserver-xorg-video-intel (Ubuntu): | |
importance: | Undecided → Medium |
summary: |
- [gm45] Backlight sometimes stays off after resume on Lenovo X200 + Backlight sometimes stays off |
description: | updated |
summary: |
- Backlight sometimes stays off + [gm45] Backlight sometimes stays off |
Exactly the same bug here, but I also affected the bug in Windows 7(tested for many many times).