The issue seems to be that the gnome-screensaver watches for "visibility_notify_event" in gs-window-x11.c
For unredirect fullscreenwindows it get: [gs_window_real_visibility_notify_event] gs-window-x11.c:2059 (21:02:19): gs_window_real_visibility_notify_event(): 7bf080 unobscured [gs_window_real_visibility_notify_event] gs-window-x11.c:2059 (21:02:19): gs_window_real_visibility_notify_event(): 7bf080 fully_obscured [gs_window_real_visibility_notify_event] gs-window-x11.c:2059 (21:02:20): gs_window_real_visibility_notify_event(): 7bf080 unobscured but without "unredirect fullscreen windows" its: [gs_window_real_visibility_notify_event] gs-window-x11.c:2059 (21:07:02): gs_window_real_visibility_notify_event(): 7bf260 unobscured Now in gs-manager.c window_obscured_cb () is run and it tests if the window is obscured. If that is the case, it requests a unlock. -- Screensaver doesn't start https://bugs.launchpad.net/bugs/278112 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs