VNC Black screen on connection

Hi all,

I have remote adminstration enabled on my work machine, using VNC. I connect to this with a ssh tunnel to the remote machine.

So I would open up an ssh tunnel to remote and connect vnc from my home machine over the tunnel and be dropped at a login screen, where I could login and access my remote desktop.

This was working up until a recent online update, now on connecting the vnc client program I get a black screen, with no login box.

I’m using lightdm on the remote machine, and was before the update. If I switch to xdm, I get the more primitive login box and can login successfully.

Any idea what might have screwed up for lightdm? I have another machine (now running tumbleweed which I can connect to and login without problems, also running lightdm).

Cheers.

Phill.