查看连接的显示器
xrandr -q | grep " connected"
调节相应显示器的亮度
xrandr --output DP-0 --brightness 0.8
https://blog.youkuaiyun.com/weixin_43238031/article/details/111312722?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-6.control&dist_request_id=&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-6.control