ubuntu双屏下更改主显示器

ly@ly:~$ xrandr

Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 16384 x 16384

DVI-I-0 disconnected (normal left inverted right x axis y axis)

DVI-I-1 connected primary 1920×1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm

1920×1080     60.00*+  59.94    50.00    60.05    60.00    50.04

1680×1050     59.95

1440×900      59.89

1440×576      50.00

1440×480      59.94

1280×1024     75.02    60.02

1280×960      60.00

1280×800      59.81

1280×720      60.00    59.94    50.00

1152×864      60.00

1024×768      75.03    70.07    60.00

800×600       75.00    72.19    60.32    56.25

720×576       50.00

720×480       59.94

640×480       75.00    72.81    59.94    59.93

DP-0 connected 1920×1080+1920+0 (normal left inverted right x axis y axis) 527mm x 296mm

1920×1080     60.00*+

1680×1050     59.95

1440×900      59.89

1280×1024     75.02    60.02

1280×960      60.00

1280×720      60.00

1024×768      75.03    70.07    60.00

800×600       75.00    72.19    60.32    56.25

640×480       75.00    72.81    59.94

DP-1 disconnected (normal left inverted right x axis y axis)

HDMI-0 disconnected (normal left inverted right x axis y axis)

ly@ly:~$ xrandr –output DP-0 –auto –primary   #设置DP-0为主显示器

ly@ly:~$ xrandr –output DVI-I-1 –right-of DP-0 –auto  #设置DVI-I-1在主显示器DP-0的右方

ly@ly:~$