#0  on_screen_size_changed (screen=0x1a3d130, manager=0x1a624e0) at msd-background-manager.c:272
  267: 
  268: 	if (!p->msd_can_draw || p->draw_in_progress || caja_is_drawing_bg (manager))
  269: 		return;
  270: 
  271: 	gint scr_num = gdk_screen_get_number (screen);
  272: 	gchar *old_size = g_list_nth (manager->priv->scr_sizes, scr_num)->data;
  273: 	gchar *new_size = g_strdup_printf ("%dx%d", gdk_screen_get_width (screen),
  274: 						    gdk_screen_get_height (screen));
  275: 	if (g_strcmp0 (old_size, new_size) != 0)
  276: 	{
  277: 		g_debug ("Screen%d size changed: %s -> %s", scr_num, old_size, new_size);
#1  0x00007f075e6d6504 in _g_closure_invoke_va (closure=0x1a3d130, closure@entry=0x1b0e130, return_value=return_value@entry=0x0, instance=0x1, instance@entry=0x1a3d130, args=0xffffffff, args@entry=0x7fff78c40e08, n_params=1160055008, param_types=0x0) at /build/buildd/glib2.0-2.43.91/./gobject/gclosure.c:831
  [Error: /build/buildd/glib2.0-2.43.91/./gobject/gclosure.c was not found in source tree]
#2  0x00007f075e6effa7 in g_signal_emit_valist (instance=0x1a3d130, signal_id=<optimized out>, detail=0, var_args=0x7fff78c40e08) at /build/buildd/glib2.0-2.43.91/./gobject/gsignal.c:3214
  [Error: /build/buildd/glib2.0-2.43.91/./gobject/gsignal.c was not found in source tree]
#3  0x00007f075e6f0e4a in g_signal_emit_by_name (instance=instance@entry=0x1a3d130, detailed_signal=0x0, detailed_signal@entry=0x7f075dbabd58 "monitors-changed") at /build/buildd/glib2.0-2.43.91/./gobject/gsignal.c:3401
  [Error: /build/buildd/glib2.0-2.43.91/./gobject/gsignal.c was not found in source tree]
#4  0x00007f075db839ec in process_monitors_change (screen=0x1a3d130) at /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkscreen-x11.c:1163
  [Error: /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkscreen-x11.c was not found in source tree]
#5  _gdk_x11_screen_size_changed (screen=0x1a3d130, event=<optimized out>) at /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkscreen-x11.c:1198
  [Error: /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkscreen-x11.c was not found in source tree]
#6  0x00007f075db782f6 in gdk_event_translate (display=0x1a3b020, event=0x1b1e4e0, xevent=0x7fff78c41120, return_exposes=-1, return_exposes@entry=0) at /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkevents-x11.c:2174
  [Error: /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkevents-x11.c was not found in source tree]
#7  0x00007f075db78ad6 in _gdk_events_queue (display=display@entry=0x1a3b020) at /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkevents-x11.c:2358
  [Error: /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkevents-x11.c was not found in source tree]
#8  0x00007f075db78b7e in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkevents-x11.c:2419
  [Error: /build/buildd/gtk+2.0-2.24.27/gdk/x11/gdkevents-x11.c was not found in source tree]
#9  0x00007f075e400c3d in g_main_dispatch (context=0x1a43110) at /build/buildd/glib2.0-2.43.91/./glib/gmain.c:3122
  [Error: /build/buildd/glib2.0-2.43.91/./glib/gmain.c was not found in source tree]
#10 g_main_context_dispatch (context=context@entry=0x1a43110) at /build/buildd/glib2.0-2.43.91/./glib/gmain.c:3737
  [Error: /build/buildd/glib2.0-2.43.91/./glib/gmain.c was not found in source tree]
#11 0x00007f075e400f20 in g_main_context_iterate (context=0x1a43110, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.43.91/./glib/gmain.c:3808
  [Error: /build/buildd/glib2.0-2.43.91/./glib/gmain.c was not found in source tree]
#12 0x00007f075e401242 in g_main_loop_run (loop=0x1b1f570) at /build/buildd/glib2.0-2.43.91/./glib/gmain.c:4002
  [Error: /build/buildd/glib2.0-2.43.91/./glib/gmain.c was not found in source tree]
#13 0x00007f075f641857 in IA__gtk_main () at /build/buildd/gtk+2.0-2.24.27/gtk/gtkmain.c:1282
  [Error: /build/buildd/gtk+2.0-2.24.27/gtk/gtkmain.c was not found in source tree]
#14 0x0000000000403d63 in main (argc=1, argv=0x7fff78c41508) at main.c:520
  515: 
  516:         if (do_timed_exit) {
  517:                 g_timeout_add_seconds (30, (GSourceFunc) timed_exit_cb, NULL);
  518:         }
  519: 
  520:         gtk_main ();
  521: 
  522:  out:
  523: 
  524:         if (bus != NULL) {
  525:                 dbus_g_connection_unref (bus);