Comment 11 for bug 33523

Bingo, here's the log from when it actually occurs:

[add_idle_timer] gs-watcher-x11.c:474 (12:11:03): starting idle_timer (590000, 6856)
[idle_timer] gs-watcher-x11.c:1239 (12:11:04): in idle timer
[_gs_watcher_check_pointer_position] gs-watcher-x11.c:1389 (12:11:04): Idle 1 seconds
[check_for_clock_skew] gs-watcher-x11.c:1308 (12:11:04): checking wall clock for hibernation, changed: 0:00:02
[watcher_idle_cb] gs-monitor.c:110 (12:11:04): Idle signal detected: 1
[gs_listener_set_session_idle] gs-listener-dbus.c:367 (12:11:04): Setting session idle: 1
[listener_check_activation] gs-listener-dbus.c:260 (12:11:04): Checking for activation
[listener_check_activation] gs-listener-dbus.c:275 (12:11:04): Trying to activate
[gs_grab_get_keyboard] gs-grab-x11.c:166 (12:11:04): Grabbing keyboard widget=4C
[gs_grab_get_mouse] gs-grab-x11.c:192 (12:11:04): Grabbing mouse widget=4C
[gs_fade_set_active] gs-fade.c:500 (12:11:04): Setting fade: ON
[_gs_watcher_check_pointer_position] gs-watcher-x11.c:1389 (12:11:04): Idle 1 seconds
[check_for_clock_skew] gs-watcher-x11.c:1308 (12:11:04): checking wall clock for hibernation, changed: 0:00:00
[gs_fade_set_active] gs-fade.c:500 (12:11:05): Setting fade: OFF
[window_map_cb] gs-manager.c:906 (12:11:05): Handling window map event
[gs_window_clear] gs-window-x11.c:220 (12:11:05): Clearing window
[clear_all_children] gs-window-x11.c:201 (12:11:05): Clearing all child windows
[window_show_cb] gs-manager.c:959 (12:11:05): Handling window show
[gs_watcher_set_active] gs-watcher-x11.c:764 (12:11:06): turning watcher: OFF
[_gs_watcher_set_active_internal] gs-watcher-x11.c:747 (12:11:06): Stopping idle watcher
[_gs_watcher_set_session_idle] gs-watcher-x11.c:546 (12:11:06): Changing idle state: 1
[gs_window_xevent] gs-window-x11.c:439 (12:11:06): not raising our windows
[window_map_event_cb] gs-manager.c:893 (12:11:06): Handling window map_event event
[gs_grab_move_keyboard] gs-grab-x11.c:328 (12:11:06): Moving keyboard grab from 4C to 2400328
[gs_grab_move_keyboard] gs-grab-x11.c:335 (12:11:06): *** doing X server grab