Hi,
how about a workaround? I cannot write a script at all, but from Google
searches on how to do stuff I created my own workaround:
1) For working brightness buttons after startup and a startup brightness
of 50 % I added the following to the file /etc/rc.local (before the exit
0):
bash -c "echo 0 > /sys/class/backlight/intel_backlight/brightness"
bash -c "echo 50 > /sys/class/backlight/acpi_video0/brightness"
2) For working brightness buttons after a suspend I added a file named
20_Enable_Brightness_setting_keys
to the directory /etc/pm/sleep.d
The file contains:
case "${1}" in
resume|thaw)
bash -c "echo 0 > /sys/class/backlight/intel_backlight/brightness"
;;
esac
I guess this is crude and full of possible errors/problems, but it works
for me for the time being. This way the brightness after a resume is at
the level it was before standby and the brightness keys on the XPS13
work.
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https://bugs.launchpad.net/bugs/1163720
Title:
Brightness control broken on XPS13 with 3.8.0-16 and 3.8.0-22
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