I think what is happening here is that the login prompt is appearing on the screen on which the mouse pointer is located, rather than the primary monitor, so it's not so random at all.
** Bug watch added: GNOME Bug Tracker #637733 https://bugzilla.gnome.org/show_bug.cgi?id=637733 ** Also affects: gnome-screensaver via https://bugzilla.gnome.org/show_bug.cgi?id=637733 Importance: Unknown Status: Unknown ** Also affects: gnome-screensaver (Ubuntu) Importance: Undecided Status: New ** Summary changed: - login prompt displayed on random monitors in multi-display setups + login prompt is not always displayed on the primary monitor on multi-display setups ** Summary changed: - login prompt is not always displayed on the primary monitor on multi-display setups + login prompt is not always displayed on the primary monitor on multi-monitor setups ** Changed in: hundredpapercuts Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-screensaver in ubuntu. https://bugs.launchpad.net/bugs/633638 Title: login prompt is not always displayed on the primary monitor on multi-monitor setups -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs