#0  g_bit_lock (address=address@entry=0x20, lock_bit=lock_bit@entry=0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gbitlock.c:214
#1  0x00007ffff61667b8 in g_variant_lock (value=0x0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:221
#2  g_variant_fill_gvs (serialised=0x7fffffffc710, data=0x0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:399
#3  0x00007ffff616bc35 in gvs_variable_sized_array_needed_size (n_children=3, children=0xa8a950, gvs_filler=0x7ffff61667a0 <g_variant_fill_gvs>, type_info=<optimized out>)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:709
#4  g_variant_serialiser_needed_size (type_info=<optimized out>, gvs_filler=gvs_filler@entry=0x7ffff61667a0 <g_variant_fill_gvs>, children=0xa8a950, n_children=3)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:1434
#5  0x00007ffff6165e77 in g_variant_ensure_size (value=0x7fffe40a9460) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:338
#6  0x00007ffff61667c0 in g_variant_fill_gvs (serialised=0x7fffffffc7d0, data=0x7fffe40a9460) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:400
#7  0x00007ffff616be67 in gvs_variant_needed_size (type_info=0x7ffff61f42e0 <g_variant_type_info_basic_table+320>, children=0x7ba5e0, n_children=1, gvs_filler=0x7ffff61667a0 <g_variant_fill_gvs>)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:1206
#8  g_variant_serialiser_needed_size (type_info=0x7ffff61f42e0 <g_variant_type_info_basic_table+320>, gvs_filler=gvs_filler@entry=0x7ffff61667a0 <g_variant_fill_gvs>, children=0x7ba5e0, n_children=1)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:1434
#9  0x00007ffff6165e77 in g_variant_ensure_size (value=0x7fffe40a5c00) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:338
#10 0x00007ffff61667c0 in g_variant_fill_gvs (serialised=0x7fffffffc890, data=0x7fffe40a5c00) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:400
#11 0x00007ffff616bee0 in gvs_variable_sized_maybe_needed_size (type_info=0x7fffe40a7590, n_children=1, children=0xb93d40, gvs_filler=0x7ffff61667a0 <g_variant_fill_gvs>)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:363
#12 g_variant_serialiser_needed_size (type_info=0x7fffe40a7590, gvs_filler=gvs_filler@entry=0x7ffff61667a0 <g_variant_fill_gvs>, children=0xb93d40, n_children=1)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:1434
#13 0x00007ffff6165e77 in g_variant_ensure_size (value=0x7fffe40dc4c0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:338
#14 0x00007ffff61667c0 in g_variant_fill_gvs (serialised=0x7fffffffc950, data=0x7fffe40dc4c0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:400
#15 0x00007ffff616bd78 in gvs_tuple_needed_size (n_children=2, children=0xb930e0, gvs_filler=0x7ffff61667a0 <g_variant_fill_gvs>, type_info=0x7fffe40dc090)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:968
#16 g_variant_serialiser_needed_size (type_info=0x7fffe40dc090, gvs_filler=gvs_filler@entry=0x7ffff61667a0 <g_variant_fill_gvs>, children=0xb930e0, n_children=2)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:1434
#17 0x00007ffff6165e77 in g_variant_ensure_size (value=0x7fffe40cd150) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:338
#18 0x00007ffff61667c0 in g_variant_fill_gvs (serialised=0x7fffffffca10, data=0x7fffe40cd150) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:400
#19 0x00007ffff616bc35 in gvs_variable_sized_array_needed_size (n_children=1, children=0xb9ec70, gvs_filler=0x7ffff61667a0 <g_variant_fill_gvs>, type_info=<optimized out>)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:709
#20 g_variant_serialiser_needed_size (type_info=<optimized out>, gvs_filler=gvs_filler@entry=0x7ffff61667a0 <g_variant_fill_gvs>, children=0xb9ec70, n_children=1)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-serialiser.c:1434
#21 0x00007ffff6165e77 in g_variant_ensure_size (value=0x7fffe40dce00) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:338
#22 0x00007ffff616648f in g_variant_get_size (value=value@entry=0x7fffe40dce00) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gvariant-core.c:817
#23 0x00007fffef4cf75f in dconf_engine_prepare_change (change=<optimized out>, engine=0x73f0c0) at dconf-engine.c:905
#24 0x00007fffef4cf84f in dconf_engine_manage_queue (engine=0x73f0c0) at dconf-engine.c:1032
#25 0x00007fffef4d04f1 in dconf_engine_change_fast (engine=0x73f0c0, changeset=changeset@entry=0x7fffe40a9e40, origin_tag=origin_tag@entry=0x0, error=error@entry=0x0) at dconf-engine.c:1145
#26 0x00007fffef4ceeac in dconf_settings_backend_write (backend=0x90a190, key=0x863ba0 "/org/gnome/desktop/peripherals/tablets/056a:0018/display", value=0x7fffe40a9460, origin_tag=0x0) at dconfsettingsbackend.c:89
#27 0x00007ffff67281f4 in g_settings_backend_write (backend=0x90a190, key=key@entry=0x863ba0 "/org/gnome/desktop/peripherals/tablets/056a:0018/display", value=value@entry=0x7fffe40a9460, origin_tag=origin_tag@entry=0x0)
    at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gsettingsbackend.c:783
#28 0x00007ffff672cc33 in g_settings_write_to_backend (settings=settings@entry=0x765430, value=value@entry=0x7fffe40a9460, key=0x7fffffffcbc0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gsettings.c:1077
#29 0x00007ffff672e045 in g_settings_set_value (settings=settings@entry=0x765430, key=key@entry=0x7fffe9ae2d6c "display", value=0x7fffe40a9460) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gsettings.c:1537
#30 0x00007fffe9adcbdc in settings_set_display (settings=0x765430, output=output@entry=0x0) at gsd-device-mapper.c:384
#31 0x00007fffe9add229 in input_info_remap (input=0x6a3f40) at gsd-device-mapper.c:557
#32 0x00007fffe9add375 in input_info_remap (input=0x6a3f40) at gsd-device-mapper.c:553
#33 mapper_apply_helper_info (mapper=mapper@entry=0xa3ce00, helper=helper@entry=0xb9ac80) at gsd-device-mapper.c:604
#34 0x00007fffe9addb87 in mapper_recalculate_candidates (mapper=0xa3ce00) at gsd-device-mapper.c:631
#35 _device_mapper_update_outputs (mapper=mapper@entry=0xa3ce00) at gsd-device-mapper.c:853
#36 0x00007fffe9addc6b in on_rr_screen_ready (object=<optimized out>, result=<optimized out>, user_data=0xa3ce00) at gsd-device-mapper.c:882
#37 0x00007ffff66f2f23 in g_task_return_now (task=0x959ec0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gtask.c:1088
#38 0x00007ffff66f35ce in g_task_return (task=0x959ec0, type=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gtask.c:1146
#39 0x00007ffff75988bf in on_proxy_acquired (object=<optimized out>, result=<optimized out>, user_data=0x959ec0) at gnome-rr.c:631
#40 0x00007ffff66e2a07 in g_simple_async_result_complete (simple=0xa3cac0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gsimpleasyncresult.c:763
#41 0x00007ffff66e2a69 in complete_in_idle_cb (data=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/gio/gsimpleasyncresult.c:775
#42 0x00007ffff612a84a in g_main_dispatch (context=0x68c660) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3122
#43 g_main_context_dispatch (context=context@entry=0x68c660) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3737
#44 0x00007ffff612abe0 in g_main_context_iterate (context=0x68c660, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:3808
#45 0x00007ffff612af02 in g_main_loop_run (loop=0x7b5ef0) at /usr/src/debug/dev-libs/glib-2.44.1/glib-2.44.1/glib/gmain.c:4002
#46 0x00007ffff6e94f55 in gtk_main () at /usr/src/debug/x11-libs/gtk+-3.16.3/gtk+-3.16.3/gtk/gtkmain.c:1219
#47 0x0000000000403720 in main (argc=1, argv=0x7fffffffd0c8) at main.c:427