Comment 2 for bug 1525435

StacktraceTop:
 g_type_create_instance (type=14342800) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./gobject/gtype.c:1816
 g_object_constructor (type=<optimized out>, n_construct_properties=13, construct_params=0xdadb90) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./gobject/gobject.c:2064
 gdm_display_constructor (type=14342800, n_construct_properties=13, construct_properties=0xdadb90) at gdm-display.c:1110
 g_object_new_with_custom_constructor (n_params=6, params=0x7fff444e5fd0, class=0xdaa6a0) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./gobject/gobject.c:1697
 g_object_new_internal (class=class@entry=0xdaa6a0, params=params@entry=0x7fff444e5fd0, n_params=n_params@entry=6) at /build/glib2.0-ajuDY6/glib2.0-2.46.1/./gobject/gobject.c:1777