VNC + LM 19.3 + LCNC2.8 SOLVED

I get following debug message trying ti open LinuxCNC via VNC. Is it not possible to open LCNC this way

Anybody that can answer

Is it possible to start LCNC via VNC or not.

Take this with a grain of salt as i have not used VNC in over 6 years, but if i remember correctly,
This will work:
The remote PC must have the Desktop environment loaded, meaning it needs to have a monitor attached, or have a dummy plug instead of the monitor. Dummy works with VGA, for DVI or HDMI or DP it requires forcing X11 to use a screen when there are none attached.
This will not work:
Remote PC has no monitor or any of the above mentioned. This will force the remote PC to use the local monitor as a screen in software mode, and this will work for most of the stuff, but anything requiring direct access to OpenGL or some other rendering stuff will not work, as can be seen from your error report where X11 can not access the "xrandr" function on the other PC.
Again, none of this is certain, that is all i recall and it is foggy out there.
Can you attach a monitor to the remote PC and try again to connect to the local one via VNC ? Remote PC is the one with LinuxCNC on it controlling the machine.

With or without monitor on the lathe PC, not possible to get this working.

RPi4 that I have on Plasma = no problems

I have now VNC up and running so I can via VNC controll/test my lathe PC from a warm office

This syntax got me going x11vnc --create -repeat --noxdamage


Thanks to Hakan who got me going on this