One more note. For me, selecting "switch user" from the user menu on the top right turns the screen black and appears as if its a lock screen (as noted by the OP). But moving the mouse or hitting the keyboard returns me immediately to my session without requiring a password.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/861790 Title: choosing to switch users leads to dark screen, no options To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/861790/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs