linux 設置雙顯示器

1.查看顯示器

xrandr

結果如下，有兩個顯示器：主顯示器eDP-1 與  外接顯示器HDMI-1

Screen 0: minimum 320 x 200, current 1600 x 900, maximum 16384 x 16384
eDP-1 connected 1368x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
   1920x1080     60.02 +  60.01    59.97    59.96    59.93
   1680x1050     59.95    59.88
   1600x1024     60.17
   1400x1050     59.98
   1600x900      59.99    59.94    59.95    59.82
   1280x1024     60.02
   1440x900      59.89
   1400x900      59.96    59.88
   1280x960      60.00
   1440x810      60.00    59.97
   1368x768      59.88*   59.85
   1360x768      59.80    59.96
   1280x800      59.99    59.97    59.81    59.91
   1152x864      60.00
   1280x720      60.00    59.99    59.86    59.74
   1024x768      60.04    60.00
   960x720       60.00
   928x696       60.05
   896x672       60.01
   1024x576      59.95    59.96    59.90    59.82
   960x600       59.93    60.00
   960x540       59.96    59.99    59.63    59.82
   800x600       60.00    60.32    56.25
   840x525       60.01    59.88
   864x486       59.92    59.57
   800x512       60.17
   700x525       59.98
   800x450       59.95    59.82
   640x512       60.02
   720x450       59.89
   700x450       59.96    59.88
   640x480       60.00    59.94
   720x405       59.51    58.99
   684x384       59.88    59.85
   680x384       59.80    59.96
   640x400       59.88    59.98
   576x432       60.06
   640x360       59.86    59.83    59.84    59.32
   512x384       60.00
   512x288       60.00    59.92
   480x270       59.63    59.82
   400x300       60.32    56.34
   432x243       59.92    59.57
   320x240       60.05
   360x202       59.51    59.13
   320x180       59.84    59.32
HDMI-1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 476mm x 268mm
   1920x1080     60.00 +  59.94
   1600x900      60.00*
   1280x1024     75.02    60.02
   1152x864      75.00
   1280x720      60.00    59.94
   1024x768      75.03    60.00
   800x600       75.00    60.32
   720x480       60.00    59.94
   640x480       75.00    60.00    59.94
   720x400       70.08
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)

2.主顯示器和外接顯示器同內容

xrandr --output HDMI-1 --same-as eDP-1 --auto

3.右擴展外接顯示器

設置 HDMI-1為eDP-1的右擴展屏

xrandr --output HDMI-1 --right-of eDP-1 --auto

相關其他參數：--left-of, --right-of, --above, --below, --same-as  ,如把主顯示器顯示在外接顯示器下面

xrandr --output eDP-1 --below HDMI-1

4.設置外接顯示器為豎屏

xrandr --output HDMI-1 --rotate left

　　相關參數 'normal', 'left', 'right' or 'inverted'

5.只用外接顯示器

xrandr --output HDMI-1 --auto --output eDP-1 --off

6.設置外接顯示器為主顯

這里設置外接顯示器為主顯示器

xrandr --output HDMI-1 --primary

7.左擴展顯示器

在上一步的基礎上，可以設置筆記本顯示器為外接顯示器的左擴展

xrandr --output eDP-1 --left-of HDMI-1