How to change the Monitor brightness on Linux?

Question

How do I programmatically change the monitor brightness on Linux?

I\'m using SLES 11.

Answer 1

For me it works perfectly with xbacklight. If you for example wish to set up a key binding, you can use

bindsym $SUPER+Shift+plus   exec  xbacklight -inc 10
bindsym $SUPER+Shift+minus  exec  xbacklight -dec 10

in your window managers config (I use i3) to regulate your screen's brightness level.

I wouldn't recommend xrandr for this since it doesn't stop at 100% brightness automatically.