https://bugzilla.novell.com/show_bug.cgi?id=711339
https://bugzilla.novell.com/show_bug.cgi?id=711339#c5
--- Comment #5 from Philipp Kälin 2012-01-16 11:38:59 UTC ---
I loked in /sys/ for all files containing the value "bright". Then I changed
the brightness of the screen using the Keys Fnn+F6/F7 and watched for the
changes in the files. The tabular is in the attached file:"Files in
/sys/containig bright and their values"
I mentioned that the value of
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight/actual_brightness
is always constant after a suspend. Before the suspend it changed.
To change the brightness after suspend I did the following:
#su
#echo 320 > /sys/class/backlight/intel_backlight/brightness
Now the file
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight/actual_brightness
contains the same value as given in the above comand and display brightness is
really changed.
I tested this with 3.1.0-1.2-desktop and 3.2.0.6449 Vanilla. On both this
workaround works fine to change brightness, but the keys Fn+F6/F7 are stil not
working.
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