| What | Removed | Added |
|---|---|---|
| Resolution | NOTOURBUG | FIXED |
Comment # 11
on bug 109178
from Jan
Just for the sake of record I found the solution: The (UEFI based) kernel creates /sys/firmware/efi/efivars with the variable: KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852 The set immutable flag can be disabled with: chattr -i /sys/firmware/efi/efivars/KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852 After that the variable can be altered from 00 - 03: echo 0700000002 | xxd -p -r > /sys/firmware/efi/efivars/KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852 (GUID dependent on the manufacturer) 00 - Backlight off (always) 01 - Backlight on DIM level (by low ambient light; detected by light sensor) 02 - Backlight on NORM level (by low ambient light) 03 - Backlight on FULL level (by low ambient light) Inspired by: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1203592
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