列出屏幕

  1. xrandr --listmonitors                                 
  2. Monitors: 1
  3.  0: +*eDP1 1920/310x1080/170+0+0  eDP1

调节亮度

  1. ➜  ~ xrandr --output eDP1 --brightness 0.9
  2. ➜  ~ xrandr --output eDP1 --brightness 0.5
  3. ➜  ~ xrandr --output eDP1 --brightness 0.4
  4. ➜  ~ xrandr --output eDP1 --brightness 0.8
  5. ➜  ~ xrandr --output eDP1 --brightness 1  
  6. ➜  ~ xrandr --output eDP1 --brightness 0.7

设置主显示器

  1. xrandr --output eDP1 --primary

参考
tldr

Set the size, orientation and/or reflection of the outputs for a screen.

  • Display the current state of the system (known screens, resolutions, …):
    xrandr —query
  • Disable disconnected outputs and enable connected ones with default settings:
    xrandr —auto
  • Change the resolution and update frequency of DisplayPort 1 to 1920x1080, 60Hz:
    xrandr —output DP1 —mode 1920x1080 —rate 60
  • Set the resolution of HDMI2 to 1280x1024 and put it on the right of DP1:
    xrandr —output HDMI2 —mode 1280x1024 —right-of DP1
  • Disable the VGA1 output:
    xrandr —output VGA1 —off