I want to VNC connect to an Ubuntu 20.04 desktop from an Ubuntu 22.04 desktop (both in same LAN). I've tried Oli's answer
and it seemed like I was able to SSH into the remote machine and start x11vnc but I was unable to connect with Remmina.
I think I have some settings wrong
I'm using these basic settings and no SSH tunneling because I believe the port is already forwarded to my local machine?
After a few seconds of saying it's connecting I just see a black screen. Any help is appreciated. Thanks
Edit: I edited /etc/systemd/system/x11vnc.service like in this top answer and tried again without SSH tunnel and that worked.
There's a bit of input delay though (~1 second or so). Since this is over LAN I figured it would be a bit more responsive. Is there something I can do about that?
Edit #2: Actually it worked once and not anymore. When I disconnected the VNC (client side) an error messaged showed up (server side) that says System program problem detected and this message shows up every two minutes or so. On the client side it seems like I can connect, at least it doesn't throw any obvious error message. But the screen is all black (still with no SSH tunneling)
sshtunnel and VNC directly into the IP address of your Ubuntu 20.04 desktop? First, rule out the problem is at the VNC or at the ssh tunnel. Update your question and add information about running VNC without ssh first. See this question for how to setup x11VNC in Ubuntu 20.04. – user68186 Sep 28 '22 at 01:09