Hmm... I think the logout screen's Switch User functionality is the right way, as the screensaver asks for a user to switch to, which is then thrown away. There's no point asking for a username, as it just throws you back to GDM anyway.
-- 'Switch User' button from 'System/Quit' should behave exactly like 'Switch User' from gnome-screensaver https://launchpad.net/bugs/47005 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs