https://bugzilla.novell.com/show_bug.cgi?id=433788
User trenn@novell.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=433788#c37
--- Comment #37 from Thomas Renninger 2008-12-03 02:02:56 MST ---
Can the others please double check whether they are also seeing this.
Instead of "/proc/acpi/ibm/brightness" better look at:
/sys/class/backlight/...
for your supported amount of backlight levels.
(or both, they "should" be in-sync...)
Irene: I very much expect you have this change, just to be sure, please double
check whether you have:
-------
Thu Nov 20 13:27:57 CET 2008 - trenn@suse.de
..
Fix missing bit for ThinkPad brightness switching:
- patches.arch/acpi_video_thinkpad_exclude_IGD_devices.patch:
Do not use video backlight switching for Lenovo ThinkPads.
-------
in rpm -q --changelog kernel-default |less
of your installed kernel or
rpm -qp --changelog kernel-default.rpm |less
in the kernel package of your running kernel.
This is the fix for this bug, but may cause the double switching on yours.
IGD aka Opregion driven brightness switching has a hack/workaround added to
explicitly grab the key and set the brightness, while in other case the key is
processed by ACPI internally.
Next, please do:
dmesg |grep -i igd
There should be a line:
"Found IGD device" (from the core ACPI parts)
and
"IGD device detected - take over backlight switching" (from the thinkpad_acpi
driver)
Can you confirm seeing this or maybe there already something goes wrong?
What ThinkPad model do you use?
--
Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.