(gdb) backtrace
#0  0x00007ffff4efe108 in g_bit_lock () at /lib64/libglib-2.0.so.0
#1  0x00007ffff4f63cb8 in g_variant_fill_gvs () at /lib64/libglib-2.0.so.0
#2  0x00007ffff4f69145 in g_variant_serialiser_needed_size ()
    at /lib64/libglib-2.0.so.0
#3  0x00007ffff4f63377 in g_variant_ensure_size () at /lib64/libglib-2.0.so.0
#4  0x00007ffff4f63cc0 in g_variant_fill_gvs () at /lib64/libglib-2.0.so.0
#5  0x00007ffff4f69377 in g_variant_serialiser_needed_size ()
    at /lib64/libglib-2.0.so.0
#6  0x00007ffff4f63377 in g_variant_ensure_size () at /lib64/libglib-2.0.so.0
#7  0x00007ffff4f63cc0 in g_variant_fill_gvs () at /lib64/libglib-2.0.so.0
#8  0x00007ffff4f693f0 in g_variant_serialiser_needed_size ()
    at /lib64/libglib-2.0.so.0
#9  0x00007ffff4f63377 in g_variant_ensure_size () at /lib64/libglib-2.0.so.0
#10 0x00007ffff4f63cc0 in g_variant_fill_gvs () at /lib64/libglib-2.0.so.0
#11 0x00007ffff4f69288 in g_variant_serialiser_needed_size ()
    at /lib64/libglib-2.0.so.0
#12 0x00007ffff4f63377 in g_variant_ensure_size () at /lib64/libglib-2.0.so.0
#13 0x00007ffff4f63cc0 in g_variant_fill_gvs () at /lib64/libglib-2.0.so.0
#14 0x00007ffff4f69145 in g_variant_serialiser_needed_size ()
    at /lib64/libglib-2.0.so.0
#15 0x00007ffff4f63377 in g_variant_ensure_size () at /lib64/libglib-2.0.so.0
#16 0x00007ffff4f6398f in g_variant_get_size () at /lib64/libglib-2.0.so.0
#17 0x00007fffe402c76f in dconf_engine_prepare_change.isra ()
---Type <return> to continue, or q <return> to quit---
    at /usr/lib64/gio/modules/libdconfsettings.so
#18 0x00007fffe402c85f in dconf_engine_manage_queue ()
    at /usr/lib64/gio/modules/libdconfsettings.so
#19 0x00007fffe402d501 in dconf_engine_change_fast ()
    at /usr/lib64/gio/modules/libdconfsettings.so
#20 0x00007fffe402beac in dconf_settings_backend_write ()
    at /usr/lib64/gio/modules/libdconfsettings.so
#21 0x00007ffff55222b4 in g_settings_backend_write () at /lib64/libgio-2.0.so.0
#22 0x00007ffff5526cb3 in g_settings_write_to_backend.isra ()
    at /lib64/libgio-2.0.so.0
#23 0x00007ffff55280c5 in g_settings_set_value () at /lib64/libgio-2.0.so.0
#24 0x00007fffdfdf4a7c in settings_set_display ()
    at /usr/lib64/gnome-settings-daemon-3.0/libpower.so
#25 0x00007fffdfdf50c9 in input_info_remap.part ()
    at /usr/lib64/gnome-settings-daemon-3.0/libpower.so
#26 0x00007fffdfdf5215 in mapper_apply_helper_info ()
    at /usr/lib64/gnome-settings-daemon-3.0/libpower.so
#27 0x00007fffdfdf5a17 in _device_mapper_update_outputs ()
    at /usr/lib64/gnome-settings-daemon-3.0/libpower.so
#28 0x00007fffdfdf5afb in on_rr_screen_ready ()
    at /usr/lib64/gnome-settings-daemon-3.0/libpower.so
#29 0x00007ffff54ed083 in g_task_return_now () at /lib64/libgio-2.0.so.0
#30 0x00007ffff54ed71e in g_task_return () at /lib64/libgio-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#31 0x00007ffff718973f in on_proxy_acquired ()
    at /lib64/libgnome-desktop-3.so.10
#32 0x00007ffff54dcb67 in g_simple_async_result_complete ()
    at /lib64/libgio-2.0.so.0
#33 0x00007ffff54dcbc9 in complete_in_idle_cb () at /lib64/libgio-2.0.so.0
#34 0x00007ffff4f280ba in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#35 0x00007ffff4f28450 in g_main_context_iterate.isra ()
    at /lib64/libglib-2.0.so.0
#36 0x00007ffff4f28772 in g_main_loop_run () at /lib64/libglib-2.0.so.0
#37 0x00007ffff6a8aa05 in gtk_main () at /lib64/libgtk-3.so.0
#38 0x00000000004037d3 in main ()