I'm experiencing the same. Acer Aspire S7 392. Worked under 17.04, not under 17.10.
The only way I can change my screen brightness currently is via the command line:
sudo tee /sys/class/backlight/intel_backlight/brightness <<< 200
I'm experiencing the same. Acer Aspire S7 392. Worked under 17.04, not under 17.10.
The only way I can change my screen brightness currently is via the command line:
sudo tee /sys/class/ backlight/ intel_backlight /brightness <<< 200