Background
I'm playing around with an experimental application for changing the brightness of computer screens. I started on my laptop computer and have been using /sys/class/backlight/intel_backlight/brightness
to update the brightness, but on my desktop computer there's nothing in the /sys/class/backlight
directory
Question
Where can I find something similar to the system file /sys/class/backlight/intel_backlight/brightness
but for desktop computers with Ubuntu?
Or is there another interface for adjusting brightness on Ubuntu?
Grateful for help!