How to use VNC on an ubuntu computer without a monitor?

[nightmarevoid]

Hello all. I want to use VNC to log into an Ubuntu machine that doesn't have a monitor attached. My issue is that it would appear as though VNC does not allow this and will fail to log in when a monitor is disconnected. Is there some way to emulate a monitor with a certain resolution on Ubuntu (latest release)? specs below in case there are hardware conditions.

 

Processor: i5 2500k

graphics: intel Integrated graphics

motherboard: asrock something or the other.

drive: corsair 240gb mSATA

monitor resolution: 3440x1440

[da na]

Ghost display/dummy plug. Has an EDID chip, plugs into HDMI or DP, makes your GPU think a monitor is attached.

[Ralphred]

Depends which part of VNC you use. X11vnc will connect a vnc server to a running x session, or you can run vncserver manually and create a headless session.

[10leej]

Do you really need the GUI? because you can use ssh to get a system shell on the remote machine and it works on windows via powershell, MacOS natively. You can even use a android phone (via termux)