http://bugzilla.kernel.org/show_bug.cgi?id=11682





------- Comment #32 from zaj...@gmail.com  2008-12-13 10:12 -------
Created an attachment (id=19281)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=19281&action=view)
Script for controlling backlight level

Big success here :) Using rhd_dump I made full registers dumps, first using
fglrx with lowest backlight and second using radeonhd with max (default)
backlight level.

I compared these dumps and after one hour of guessing got backlight controlling
registers. I attach script which allows me to control backlight using rhd_dump
tool (rhd_dump is part of radeonhd) with any driver: radeonhd or fglrx.

It should be quite interesting as you don't have to use hacked DSDT or fglrx.


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