0、首先檢視下當前已經提供的解析度設定：xrandr -q

[email protected]:/home/xxx/Desktop# xrandr -q
Screen 0: minimum 1 x 1, current 1504 x 768, maximum 8192 x 8192
Virtual1 connected primary 1504x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   800x600        60.0 +   60.3 
   2560x1600      60.0 
   1920x1440      60.0 
   1856x1392      60.0 
   1792x1344      60.0 
   1920x1200      59.9 
   1600x1200      60.0 
   1680x1050      60.0 
   1400x1050      60.0 
   1280x1024      60.0 
   1440x900       59.9 
   1280x960       60.0 
   1360x768       60.0 
   1280x800       59.8 
   1152x864       75.0 
   1280x768       59.9 
   1024x768       60.0 
   640x480        59.9 
   1504x768_60.00   59.9*
Virtual2 disconnected (normal left inverted right x axis y axis)
Virtual3 disconnected (normal left inverted right x axis y axis)
Virtual4 disconnected (normal left inverted right x axis y axis)
Virtual5 disconnected (normal left inverted right x axis y axis)
Virtual6 disconnected (normal left inverted right x axis y axis)
Virtual7 disconnected (normal left inverted right x axis y axis)
Virtual8 disconnected (normal left inverted right x axis y axis)

紅色部分是我標明的，Virtual1 裝置名稱，後面會用到，maximum 8192 x 8192最大支援解析度；

1、在終端輸入：cvt 1920 1080，顯示如下：

[email protected]:/home/xxx/Desktop# cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync

紅色部分會在--newmode命令中用到，直接複製即可。

2、接下來通過--newmode、--addmode、--output命令即可完成,如下：

[email protected]:/home/xxx/Desktop# xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
[email protected]:/home/xxx/Desktop# xrandr --addmode Virtual1 "1920x1080_60.00"
[email protected]:/home/xxx/Desktop# xrandr --output Virtual1 --mode "1920x1080_60.00"

此時，螢幕解析度已經改變了。

3.通過xrandr -q命令檢視：

xrandr -q
Screen 0: minimum 1 x 1, current 1920 x 1080, maximum 8192 x 8192
Virtual1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   800x600        60.0 +   60.3 
   2560x1600      60.0 
   1920x1440      60.0 
   1856x1392      60.0 
   1792x1344      60.0 
   1920x1200      59.9 
   1600x1200      60.0 
   1680x1050      60.0 
   1400x1050      60.0 
   1280x1024      60.0 
   1440x900       59.9 
   1280x960       60.0 
   1360x768       60.0 
   1280x800       59.8 
   1152x864       75.0 
   1280x768       59.9 
   1024x768       60.0 
   640x480        59.9  
   1504x768_60.00   59.9
   1920x1080_60.00   60.0*
Virtual2 disconnected (normal left inverted right x axis y axis)
Virtual3 disconnected (normal left inverted right x axis y axis)
Virtual4 disconnected (normal left inverted right x axis y axis)
Virtual5 disconnected (normal left inverted right x axis y axis)
Virtual6 disconnected (normal left inverted right x axis y axis)
Virtual7 disconnected (normal left inverted right x axis y axis)
Virtual8 disconnected (normal left inverted right x axis y axis)

紅色部分是我新增的解析度,1504x768的新增過程省略了。

4.如果想把自定義螢幕解析度設定為永久有效，在~/.profile檔案中追加如下：

vim ~/.profile

cvt 1920 1080

xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync

xrandr --addmode Virtual1 "1920x1080_60.00"

xrandr --output Virtual1 --mode "1920x1080_60.00"

:x 儲存退出即可。