ssh-keygen -t rsa
 ssh-copy-id userx@poutax.dy.fi
 

http://wiki.x2go.org/doku.php/wiki:advanced:authentication:passwordless-ssh

Start x2go client,

Add a connection from the x2go client toolbar:

Set up a new connection:

If you have managed to transfer a key, check the 'Try auto-login' box.

Then, you can connect:

and you should get a desktop:

Select a keyboard layout matching your laptop:

Add the layout:

Move it to top:

 setup-aips
 setup-gildas