Comment 10 for bug 1500925

Which display manager are these systems using?

I noticed this affects sddm (which is installed with KDE) but not with lightdm.

I've attached a debug log whilst using sddm that indicates the cause may be a NULL DBus path:

[init_session_id] gs-listener-dbus.c:2011 (12:28:15): Got session-id: /org/freedesktop/login1/session/_32
[init_session_id] gs-listener-dbus.c:2016 (12:28:15): Got sd-session-id: 2
[query_seat_path] gs-listener-dbus.c:2063 (12:28:15): org.freedesktop.DBus.Error.UnknownObject raised:
 No such object path '/org/freedesktop/DisplayManager/Session1'