https://bugzilla.novell.com/show_bug.cgi?id=369535
User bernhard.bender@web.de added comment
https://bugzilla.novell.com/show_bug.cgi?id=369535#c29
--- Comment #29 from Bernhard Bender 2008-05-20 06:07:59 MST ---
Possible a known limitation of radeonhd:
from
http://www.x.org/wiki/radeonhd#head-d0cfd39d1b149a43f0c1d862f21f4b3ddcb43ae2
"Panel brightness cannot be changed because ACPI events aren't handled
properly. Workaround: Switch to a different virtual terminal for that. Affects
backlight on a number of laptops, e.g. from the IBM/Lenovo ThinkPad series.
(Seems to be fixed in git since some time in 2008-03, needs to be verified)"
My hp Conpaq 8510p has Radeon Mobility HD 2600 and no brightness contol, even
when I disable the environmental sensor in the BIOS.
BTW, after running OpenSUSE 11.0 b3 once, brightness control also failed in
Windows XP on the same machine.
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