ubuntu control brightness
xrandr | grep " connected" | cut -f1 -d " "
xrandr --output LVDS1 --brightness 0.7ubuntu control brightness
xrandr | grep " connected" | cut -f1 -d " "
xrandr --output LVDS1 --brightness 0.7lower brightness of a ubunut pc
$ xrandr --output [monitor-name] --brightness [brightness-level]
$ xrandr --output LVDS-1 --brightness 0.75Copyright © 2021 Codeinu
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