#0  0x00007fc90bd5a257 in XGetScreenSaver (dpy=0x55c1a201a900, timeout=timeout@entry=0x7ffe362832d8, interval=interval@entry=0x7ffe362832dc, prefer_blanking=prefer_blanking@entry=0x7ffe362832e0, allow_exp=allow_exp@entry=0x7ffe362832e4) at ../../src/GetSSaver.c:44
  [Error: GetSSaver.c was not found in source tree]
#1  0x000055c1a1741d2e in disable_builtin_screensaver (unblank_screen=0, watcher=<error reading variable: value has been optimized out>) at gs-watcher-x11.c:539
  534:         int current_server_timeout, current_server_interval;
  535:         int current_prefer_blank,   current_allow_exp;
  536:         int desired_server_timeout, desired_server_interval;
  537:         int desired_prefer_blank,   desired_allow_exp;
  538: 
  539:         XGetScreenSaver (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
  540:                          &current_server_timeout,
  541:                          &current_server_interval,
  542:                          &current_prefer_blank,
  543:                          &current_allow_exp);
  544: 
#2  watchdog_timer (watcher=<error reading variable: value has been optimized out>) at gs-watcher-x11.c:609
  604: 
  605: static gboolean
  606: watchdog_timer (GSWatcher *watcher)
  607: {
  608: 
  609:         disable_builtin_screensaver (watcher, FALSE);
  610: 
  611:         return TRUE;
  612: }
  613: 
  614: GSWatcher *
#3  0x00007fc90c2cc8a3 in g_timeout_dispatch (source=source@entry=0x55c1a21638d0, callback=<optimized out>, user_data=<optimized out>) at ../../../../glib/gmain.c:4633
  [Error: gmain.c was not found in source tree]
#4  0x00007fc90c2cbe25 in g_main_dispatch (context=0x55c1a2024fd0) at ../../../../glib/gmain.c:3148
  [Error: gmain.c was not found in source tree]
#5  g_main_context_dispatch (context=context@entry=0x55c1a2024fd0) at ../../../../glib/gmain.c:3813
  [Error: gmain.c was not found in source tree]
#6  0x00007fc90c2cc1f0 in g_main_context_iterate (context=0x55c1a2024fd0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../../glib/gmain.c:3886
  [Error: gmain.c was not found in source tree]
#7  0x00007fc90c2cc502 in g_main_loop_run (loop=0x55c1a214dfb0) at ../../../../glib/gmain.c:4082
  [Error: gmain.c was not found in source tree]
#8  0x00007fc90d3da725 in gtk_main () at ../../../../gtk/gtkmain.c:1322
  [Error: gtkmain.c was not found in source tree]
#9  0x000055c1a17408f7 in main (argc=<optimized out>, argv=<optimized out>) at gnome-screensaver.c:105
  100:                         g_warning ("Unable to start screensaver");
  101:                 }
  102:                 exit (1);
  103:         }
  104: 
  105:         gtk_main ();
  106: 
  107:         g_object_unref (monitor);
  108: 
  109:         gs_debug ("gnome-screensaver finished");
  110: