Hi – this is a normal installation running Ubuntu GNOME flavor with gdm as display manager. It ist not a headless system – I only try to run it without a monitor attached. I just reinstalled everything and right now I am experiencing the behaviour, that I get a login screen with Nomachine from remote when I leave the monitor attached. Running the machine without monitor I do not get a login screen from remote. It seems that this may be a problem with the graphics configuration being unable to run without an attached monitor – but maybe you have suggestions on this?