This also affects autologin, since no greeter is started it is the applications of the session that cannot connect to the X server rather than the greeter (see duplicate bug#848712), so the symptom there is that the session dies and one gets back to a greeter.
This also affects autologin, since no greeter is started it is the applications of the session that cannot connect to the X server rather than the greeter (see duplicate bug#848712), so the symptom there is that the session dies and one gets back to a greeter.