Set custom shortcut keys for brightness on iMac 2011 Ubuntu 20.10

Question

It works on the slider and it previously worked on a keyboard that had brightness keys. My new keyboard does not have dedicated keys. So I want to add a keybind in settings -> keyboard shortcuts -> add custom shortcut.

What is the command for it though? xbacklight -10 and xbacklight +10 does not work... any other ideas?

Thank you!

Assuming you're using Gnome (the default desktop environment), have you tried the two commands in this answer? — Harry Cutts, Apr 20 '21 at 00:46
Does this answer your question? How to change LCD brightness from command line (or via script)? — Harry Cutts, Apr 20 '21 at 01:14

score 0 · Answer 1 · answered Apr 20 '21 at 17:04

Thank you Harry! These two commands worked :)

Step up:

gdbus call --session --dest org.gnome.SettingsDaemon.Power --object-path /org/gnome/SettingsDaemon/Power --method org.gnome.SettingsDaemon.Power.Screen.StepUp

Step down:

gdbus call --session --dest org.gnome.SettingsDaemon.Power --object-path /org/gnome/SettingsDaemon/Power --method org.gnome.SettingsDaemon.Power.Screen.StepDown

Set custom shortcut keys for brightness on iMac 2011 Ubuntu 20.10

1 Answers1

Step up:

Step down: