I found the fix myself, Create /usr/share/X11/xorg.conf.d/20-intel.conf
with the following text:
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
We just need to implement this into the kernel to where it is done
automatically for intel backlight. I will notify the x server team
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https://bugs.launchpad.net/bugs/1244645
Title:
Brightness is at 100 percent and will not change
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