If your system does not have 3D support, what would the expected results be with GDM, and
or stand alone flashback.
What I am hoping to get is a login screen when starting GDM configured for flashback. When I select
flashback during the normal (3D) GDM startup, it works as expected.
When I configure GNOME using instructions at https://wiki.gnome.org/Projects/GnomeFlashback, the
default user screen comes up, but the user id is GDM. I expected to see a login screen first.