Brightness system settings do not work on Asus Eee PC X101CH
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Medium
|
Unassigned |
Bug Description
The brightness system setting page does not effect the display brigthness and does not dispaly the currnet brightness.
To reproduce:
1. Set brightness to 50 using (as root):
echo 50 > /sys/class/
2. Open System Settings > Brightness and Lock
The slider display 100% (the last set value) instead of 50%
3. Modify the slider
The screen brightness does not change
Further testing show that the brightness slider read and write /sys/class/
---
ApportVersion: 2.6.1-0ubuntu10
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
DistroRelease: Ubuntu 12.10
HibernationDevice: RESUME=
InstallationDate: Installed on 2012-06-08 (267 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MachineType: ASUSTeK COMPUTER INC. X101CH
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 psbfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.95
Tags: quantal
Uname: Linux 3.5.0-26-generic i686
UpgradeStatus: Upgraded to quantal on 2013-02-22 (7 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 01/06/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X101CH.0501
dmi.board.
dmi.board.name: X101CH
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: x.xx
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: X101CH
dmi.product.
dmi.sys.vendor: ASUSTeK COMPUTER INC.
apport information