.
Thread 1 (process 5530):
#0  gnome_rr_config_match (c1=0x1755d00, c2=0x0) at gnome-rr-config.c:801
	output2 = (GnomeOutputInfo *) 0x1755f10
#1  0x00007f4f2a91b7b7 in gnome_rr_config_apply_stored (screen=0x1752580, 
    error=0x7fff3b83ff38) at gnome-rr-config.c:931
	stored = (GnomeRRConfig *) 0x0
	desired_configs = (GnomeRRConfig **) 0x1755f10
	desired_found = <value optimized out>
	result = <value optimized out>
	my_error = (GError *) 0x0
	__PRETTY_FUNCTION__ = "gnome_rr_config_apply_stored"
#2  0x00007f4f2ab2a946 in gsd_xrandr_manager_start (manager=0x1703090, 
    error=<value optimized out>) at gsd-xrandr-manager.c:1167
	my_error = (GError *) 0x17184c0
	__PRETTY_FUNCTION__ = "gsd_xrandr_manager_start"
#3  0x00007f4f2ab28fc7 in impl_activate (plugin=0x1745390)
    at gsd-xrandr-plugin.c:78
	res = <value optimized out>
	error = (GError *) 0x0
#4  0x0000000000405c52 in gnome_settings_plugin_info_activate (info=0x1741ae0)
    at gnome-settings-plugin-info.c:497
	__PRETTY_FUNCTION__ = "gnome_settings_plugin_info_activate"
#5  0x0000000000404885 in maybe_activate_plugin (info=0x1741ae0, 
    user_data=<value optimized out>) at gnome-settings-manager.c:94
	res = <value optimized out>
#6  0x00007f4f3073117d in IA__g_slist_foreach (list=<value optimized out>, 
    func=0x404870 <maybe_activate_plugin>, user_data=0x0)
    at /build/buildd/glib2.0-2.19.4/glib/gslist.c:743
	next = (GSList *) 0x1718550
#7  0x0000000000404a8a in gnome_settings_manager_start (manager=0x1735a00, 
    error=<value optimized out>) at gnome-settings-manager.c:263
	ret = <value optimized out>
#8  0x0000000000404684 in main (argc=1, argv=0x7fff3b840178) at main.c:474
	manager = (GnomeSettingsManager *) 0x1735a00
	bus = (DBusGConnection *) 0x1738128
	res = <value optimized out>
	error = (GError *) 0x0