If you use gnome, this extension has worked well for me. https://extensions.gnome.org/extension/2645/brightness-control-using-ddcutil/ https://extensions.gnome

If you use gnome, this extension has worked well for me. https://extensions.gnome.org/extension/2645/brightness-control-using-ddcutil/ https://extensions.gnome.org/extension/2645/brightness-contr...