I am trying to remote desktop from one Ubuntu machine to another. I can ssh from client to server successfully. On the server machine I set up everything that is mentioned in the guides (Remote Desktop Preferences), but every time I am trying to remote desktop to server from client I get error "Unable to connect". Do I need to set anything up on the server besides what I already did? Can I see somewhere why I couldn't connect?
In Dash, find or search for Desktop Sharing, configure that and you can then graphically control another machine. This sets up a VNC connection that you can use. If there is no one on the other end when connecting to a machine, make sure that you require a password and disable "You must confirm each access to this machine"