Ubuntu双显示屏如何设置竖屏

Ubuntu双显示屏如何设置竖屏

引言

笔者因为需要使用外接一个竖屏显示屏来敲代码，另一块主屏用于看其他内容，但Ubuntu原生的图形化设置面板里并没有这个调节功能，因此使用命令行方式进行调节，以下为调节方法，在笔记本内置屏幕与HDMI外接的显示屏上尝试成功。

案例

xrandr --output HDMI-0 --auto --output DP-0 --auto --left-of HDMI-0 --rotate left

解释：HDMI-0为主屏，DP-0为副屏，将副屏在主屏左侧，并旋转90度

方法步骤

1. 查询当前存在的显示屏

xrandr

结果：

hermanye@hermanye-Dell-G16-7630:~$ xrandr
Screen 0: minimum 320 x 200, current 4480 x 1600, maximum 16384 x 16384
eDP-1 connected primary 2560x1600+0+0 (normal left inverted right x axis y axis) 345mm x 215mm
   2560x1600     60.00*+  60.00  
   2560x1440     60.00  
   2048x1536     60.00  
   1920x1440     60.00  
   1856x1392     60.00  
   1792x1344     60.00  
   2048x1152     60.00  
   1920x1200     60.00  
   1920x1080     60.00  
   1600x1200     60.00  
   1680x1050     60.00  
   1400x1050     60.00  
   1600x900      60.00  
   1280x1024     60.00  
   1400x900      60.00  
   1280x960      60.00  
   1440x810      60.00  
   1368x768      60.00  
   1280x800      60.00  
   1280x720      60.00  
   1024x768      60.00  
   960x720       60.00  
   928x696       60.00  
   896x672       60.00  
   1024x576      60.00  
   960x600       60.00  
   960x540       60.00  
   800x600       60.00  
   840x525       60.00  
   864x486       60.00  
   700x525       60.00  
   800x450       60.00  
   640x512       60.00  
   700x450       60.00  
   640x480       60.00  
   720x405       60.00  
   684x384       60.00  
   640x360       60.00  
   512x384       60.00  
   512x288       60.00  
   480x270       60.00  
   400x300       60.00  
   432x243       60.00  
   320x240       60.00  
   360x202       60.00  
   320x180       60.00  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-0 connected 1920x1080+2560+0 (normal left inverted right x axis y axis) 527mm x 296mm
   1920x1080     60.00*+  74.97    59.94    50.00  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1280x720      60.00    59.94    50.00  
   1152x864      75.00  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x576       50.00  
   720x480       59.94  
   640x480       75.00    59.94    59.93  
DP-1-0 disconnected (normal left inverted right x axis y axis)

由结果可知，HDMI-1-0为外接的需要旋转的屏幕

2. 旋转屏幕

将屏幕向左旋转

xrandr --output HDMI-1-0 --rotate left

结果： 外置的屏幕正常旋转为竖屏

3. 开机自启动[经过测试不可用]

经测试，开机无法自启动，可能由于设置时机不正确，需要在完全启动后再启用

sudo touch /tmp/screen_rotate.sh  # Create bash script
sudo chmod 777 /tmp/screen_rotate.sh  # Grant permission
sudo echo "xrandr --output HDMI-1-0 --rotate left" >> /tmp/screen_rotate.sh  # Write to script
sudo mv /tmp/screen_rotate.sh /etc/init.d/
sudo update-rc.d screen_rotate.sh defaults 90
sudo reboot  # reboot

如果要移除：
sudo update-rc.d -f <your_script.sh> remove

4. 开机手动启用

sudo touch ~/screen_rotate.sh  # Create bash script
sudo chmod 777 ~/screen_rotate.sh  # Grant permission
sudo echo "xrandr --output HDMI-1-0 --rotate left" >> ~/screen_rotate.sh  # Write to script
. ~/screen_rotate.sh

也可尝试将该脚本放入~/.bashrc中，在每次终端启动时执行旋转，经测试，只会旋转一次，不会反复旋转

echo "source ~/screen_rotate.sh" >> ~/.bashrc