https://bugzilla.novell.com/show_bug.cgi?id=770993
https://bugzilla.novell.com/show_bug.cgi?id=770993#c9
--- Comment #9 from Michal Veselenyi 2012-07-16 18:56:31 UTC ---
Back to 12.2b2
The module video is loaded. Unloading or loading it does absolutely nothing
(/sys/class/backlight is always empty).
I've only found in dmesg:
[ 8.670586] video: probe of LNXVIDEO:00 failed with error -5
When un/loading the video module, there is further no such message. It is only
in dmesg's history.
* The 'acpi_osi=Linux' kernel option seems to have no effect
* The 'acpi_backlight=vendor' leaves the brightness at bootloader level and
cannot change the brightness further in booted system
* The 'acpi_backlight=legacy' restores the default 12.2b2 behaviour: it dims
backlight to minimum during boot and leaves it at that level. Cannot change it
further. Need to poweroff and increase the brightness when in bootloader. Plain
reboot doesn't help - brightness is not adjustable even in bootloader.
Note: I tried this all after upgrading to 3.4.4-2-desktop SMP PREEMPT x86_64
In 11.3, /var/log/messages I have only (after wakeup):
[ 1529.359389] video LNXVIDEO:00: Restoring backlight state
Looks like some problem in acpi/video for me. At least the dimming did work,
once at boot.
I'll now try RC1, but I doubt anything changes there.
--
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.