I tried the answers other similar queuest in Ask Ubuntu, but didn't get it to work.
I reboot Ubuntu 12.04.
I remote in using SSH, and do
/usr/lib/vino/vino-server
to start VNC service.
UltraVNC client reports: Failed to connect to server!
But if I login at the Ubuntu computer and try UltraVNC again, it works.
I also had this issue. I tried user1689961's answer but got a connection refused. When I added the
-allow <ip address of client>
option, it worked.The full command:
This is a great guide.
https://help.ubuntu.com/community/VNC/Servers
Specifically, this command worked for me: