The brightness hotkey will change the "brightness" level from /sys/class/backlight/nv_backlight/, but it seems that it's actually using the Intel one.
Modify the "brightness" file in /sys/class/backlight/intel_backlight/ can change the screen brightness.
Tested with 4.11rc7
The brightness hotkey will change the "brightness" level from /sys/class/ backlight/ nv_backlight/ , but it seems that it's actually using the Intel one.
Modify the "brightness" file in /sys/class/ backlight/ intel_backlight / can change the screen brightness.
Tested with 4.11rc7