1、安装软件

用终端安装虚拟显示器软件

<code>sudo apt-get install xserver-xorg-core-hwe-18.04

sudo apt-get install xserver-xorg-video-dummy

2、添加配置文件

进入/usr/share/X11/xorg.conf.d/

创建xorg.conf文件

touch xorg.conf

编辑xorg.conf文件

sudo nano xorg.conf

往里面添加以下内容：

Section "Device"

Identifier "Device0"

Driver "dummy"

VideoRam 256000

EndSection

Section "Monitor"

Identifier "Monitor0"

HorizSync 28.0-80.0

VertRefresh 48.0-75.0

Modeline "1920x1080_60.00" 172.80 1920 2040 2248 2576 1080 1081 1084 1118 -HSync +Vsync

EndSection

Section "Screen"

DefaultDepth 24

Identifier "Screen0"

Device "Device0"

Monitor "Monitor0"

SubSection "Display"

Depth 24

Modes "1920x1080_60.00"

EndSubSection

EndSection

3、重启电脑

4、后续如果想要却换回物理显示器，只需卸载卸载xserver-xorg-core-hwe-18.04和xserver-xorg-video-dummy包。

sudo apt-get --purge remove xserver-xorg-core-hwe-18.04

sudo apt-get --purge remove xserver-xorg-video-dummy

5、删除xorg.conf文件

sudo rm /usr/share/X11/xorg.conf.d/xorg.conf

6、重启电脑