Brightness control behaves chaotically
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu |
New
|
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-
ProcCmdLine: BOOT_IMAGE=
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSign
RelatedPackageV
xserver-xorg 1:7.4+3ubuntu7
libgl1-mesa-glx 7.6.0-1ubuntu4
libdrm2 2.4.14-1ubuntu1
xserver-
xserver-
SourcePackage: xserver-
Tags: ubuntu-unr
Uname: Linux 2.6.31-14-generic i686
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/
dmi.bios.date: 05/21/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.3
dmi.board.
dmi.board.name: U90/U100
dmi.board.vendor: MICRO-STAR INTERNATIONAL CO., LTD
dmi.board.version: Ver.001
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO., LTD
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: U90/U100
dmi.product.
dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO., LTD
fglrx: Not loaded
system:
distro: Ubuntu
architecture: i686kernel: 2.6.31-14-generic