Brightness control behaves chaotically

Bug #459777 reported by Juan Diego on 2009-10-24
This bug report is a duplicate of:  Bug #415023: brightness is broken on MSI WIND U100. Edit Remove
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu
Undecided
Unassigned

Bug Description

Whenever the Fn keys for brightness control are pressed the backlight of the screen starts to oscillate from dimmer to brighter. Also if the computer is changed from battery mode to Ac mode or backwards the problem arises. Adjusting the brightness with slider in Power Management generates the same problem. After between 5 to 10 minutes the oscillation stops.

I did not have this problem in Jaunty.

I am using Karmic Koala RC.

ProblemType: Bug
Architecture: i386
Date: Sat Oct 24 15:40:59 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
MachineType: MICRO-STAR INTERNATIONAL CO., LTD U90/U100
Package: xserver-xorg-video-intel 2:2.9.0-1ubuntu2
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=2c6a3b6a-626e-4391-8c89-79a603361bc3 ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu7
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1
SourcePackage: xserver-xorg-video-intel
Tags: ubuntu-unr
Uname: Linux 2.6.31-14-generic i686
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 05/21/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.3
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: U90/U100
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
dmi.board.version: Ver.001
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO., LTD
dmi.chassis.version: Ver.001
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.3:bd05/21/2009:svnMICRO-STARINTERNATIONALCO.,LTD:pnU90/U100:pvrVer.001:rvnMICRO-STARINTERNATIONALCO.,LTD:rnU90/U100:rvrVer.001:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvrVer.001:
dmi.product.name: U90/U100
dmi.product.version: Ver.001
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO., LTD
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: i686kernel: 2.6.31-14-generic

Juan Diego (juandarias) wrote :
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