RetroPie doesn't use the desktop env (which I think you'd need for VNC) and it doesn't have it installed by default if you use the provided image. While some Pi4 users run EmulationStation from the desktop, it's not a supported or tested configuration and you may bump into problems at some point.

[INFO] [GL]: Detecting screen resolution 1360x768.
[ERROR] [KMS/EGL]: Did not find suitable video mode for 1360 x 768.

Seems to be an issue with the screen resolution, when I downgrade it the ROMs launch again ....

Will keep you updated on any fix, thanks .

@mitu VNC still says that there is no desktop there and its running

Excellent, thanks!

Stewart

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@cpcbegin no x server, no vnc.

@derebo pick one or the other. You can't do both

@MEPoss Did you enable SSH?