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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!

  • On a desktop computer, the brightness is handled be the monitor itself. – ravery Jan 9 '18 at 18:53
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Some interfaces exist, you can find them here.

The DDC protocol (apt-get install ddccontrol) should do the trick

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