[gentoo-user] Virtual Desktop with a Virtual Monitor?

[Mark Knecht]

Hi,
   I've been playing with a Raspberry Pi 4 as a utility divice for a
couple of purposes - a backup server for here at home as well as an
astrophotography manager to run my camera and mount. So far everything
is fine when I have a monitor attached. I can ssh in and run X apps,
and I can run the VNC client and control the desktop.

   What I find, however, is that when I boot the RP4 without the
monitor attached, which I would be doing most all the time, I lose the
desktop functionality through VNC. I can still ssh X apps, and both
xdpyinfo and xrandr still say the X resolution is 1920 x 1280, but
there doesn't appear to be a real desktop for VNC to latch onto.

   I get that this must be possible as essentially VirtualBox is able
to do this. I wonder if there's a way for mere mortals to do something
similar?

Thanks,
Mark