ubuntu 命令调节显示器亮度

1.显示器名字

xrandr -q | grep " connected"

HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 527mm x 297mm
DP-4 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 527mm x 297mm

2.调节亮度

xrandr --output HDMI-0 --brightness 0.5

xrandr --output DP-4 --brightness 0.5

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