This works perfectly on my .config! bindsym XF86AudioRaiseVolume exec --no-startup-id mixerctl -w outputs.master++ bindsym XF86AudioLowerVolume exec --no-startup-id mixerctl -w outputs.master-- bindsym XF86AudioMute exec --no-startup-id mixerctl -w outputs.master=0 In case it's helpful to anyone. The brightness setting works right out of the box. Now I'm trying to figure out why i3bar doesn't like my iwn0. #netbsd #bsdunix #i3wm  #guufxmmp #guufitalia #guufITA