Bug 540022

Summary: Brightness control Lenovo G450 fedora 12 x86_64
Product: [Fedora] Fedora Reporter: debesh <debesh.bhatta>
Component: system-config-displayAssignee: Adam Jackson <ajax>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 12CC: ajax, debesh.bhatta, eric.donkersloot
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-12-04 14:41:58 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description debesh 2009-11-21 18:06:46 EST
Description of problem:
The Brightness control doesn't work on a Lenovo G540 2949 CHU...
All other fn key shortcuts work except Brightness control. How do I control the screen brightness ?

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
Actual results:
Fn up arrow / down arrow doesn't work

Expected results:
Fn up arrow/down arrow should control screen brightness

Additional info:
I have installed the tbp and the system-config-xorg package .... but even then I am not able to control the gamma...... also I would like to be able to control the backlight brightness instead of gamma
Comment 1 debesh 2009-11-24 00:10:53 EST
I tried xbacklight . While I am able to control the brightness of the screen with xbacklight it jumps back to 50% in minutes. 
Also the fn-uparrow / fn-dnarrow (default brightness control) works when fedora is still booting in the blue screen. But it stops working when the login dialogue screen is displayed.
Comment 2 Eric Donkersloot 2009-12-01 09:54:50 EST
Please try this workaround: reboot your machine with the 'nomodeset' kernel
parameter. This might be a duplicate of bug 519105 ?
Comment 3 debesh 2009-12-04 14:37:29 EST
Yes that solves it Thanks.
Comment 4 debesh 2009-12-04 14:41:58 EST

*** This bug has been marked as a duplicate of bug 519105 ***