Re: xbacklight: No outputs have backlight property

like to dim my external display's backlight. Unfortunately this gives: $ xbacklight No outputs have backlight property One can do xrandr --output DP2 --brightness 0.5, but this only makes the colors less bright (as opposed to dimming the backlight). Any ideas? Thanks! Clementine

xbacklight: No outputs have backlight property

Hi! Not sure if this is possible but I'd like to dim my external display's backlight. Unfortunately this gives: $ xbacklight No outputs have backlight property One can do xrandr --output DP2 --brightness 0.5, but this only makes the colors less bright (as opposed to dimming the backlight). Any