Question

93

Add Fake Display when No Monitor is Plugged In

rated 0 times [ 93] [ 0] / answers: 1 / hits: 318978 / 3 Years ago, mon, august 30, 2021, 4:37:19

I have an Ubuntu 14.04 server that has no external monitor connected. I use NoMachine to remote control the machine. When I do so, the Unity/Gnome interface doesn't see any monitors connected, so I can only use 800x600 when connecting with NoMachine. If I plug in a monitor, I can set the resolution to whatever size the NoMachine window is on the remote computer.

Is there a way to create a "fake" monitor device on Ubuntu so I can set a desktop resolution in Unity/Gnome?

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luringdge

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2 Years ago

answered 3 Years ago mentpengu · Accepted Answer

Found a way to do it without requiring a dummy plug: Ubuntu Headless VNC VESA 800x600 Resolution Fix ~ Andy Hawkins @ June 12, 2011

Basically install a dummy driver:

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

Then write it in the /usr/share/X11/xorg.conf.d/xorg.conf (or possibly /etc/X11/xorg.conf) file (create one, if it does not exist):

Section "Device"

    Identifier  "Configured Video Device"

    Driver      "dummy"

EndSection



Section "Monitor"

    Identifier  "Configured Monitor"

    HorizSync 31.5-48.5

    VertRefresh 50-70

EndSection



Section "Screen"

    Identifier  "Default Screen"

    Monitor     "Configured Monitor"

    Device      "Configured Video Device"

    DefaultDepth 24

    SubSection "Display"

    Depth 24

    Modes "1024x800"

    EndSubSection

EndSection

Then restart the computer.