I was following instructions from here: http://www.drivard.com/2012/06/installation-freenx-server-ubuntu-12-04-lts-precise/
I installed FreeNX on my server (Ubuntu 14.04).
I am able to remotely ssh into the server.
Using NoMachine (which has been tested with other servers and work on the client) I was able to connect to the server BUT THE SCREEN WAS BLACK.
The process for connecting to the server is:
- set up the connection (via ssh using the 'NoMachine login' option).
- connect, entering password and username
- chose 'start Gnome session'
- Then black screen.
I have successfully managed this process at other times.
Edit:
- resetting the server doesn't help
- the problem persists when using different NoMachine clients