I would like to perform a VNC remote desktop session with Remmina between two computers running Ubuntu 14.04 LTS. I am able to do this remote session when a user is already logged into Unity on the remote computer. However, if the computer has just booted and the Unity log in screen is visible (i.e. that a user hasn't logged in yet), I am unable to start the remote desktop session. This forces me to physically go to the remote computer and log in so I can start the remote desktop session.
A solution would be to configure users on the remote computer to automatically log in into Ubuntu, but I would like to avoid this since it is not a secure configuration.
Any ideas on how Remmina could start a VNC remote session even if no users are logged in on the remote machine ?