.
Thread 4 (LWP 6910):
#0  0x00007ff26cd4e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ff26d5c122c in g_main_context_poll (priority=2147483647, n_fds=2, fds=0x7ff2540010c0, timeout=<optimized out>, context=0x7ff260015050) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:4135
        poll_func = 0x7ff26d5d0140 <g_poll>
#2  g_main_context_iterate (context=0x7ff260015050, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7ff2540010c0
#3  0x00007ff26d5c15b2 in g_main_loop_run (loop=0x7ff260014fe0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#4  0x00007ff26dbb93b6 in gdbus_shared_thread_func (user_data=0x7ff260015020) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gio/gdbusprivate.c:246
        data = 0x7ff260015020
#5  0x00007ff26d5e7d25 in g_thread_proxy (data=0xfc8f20) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gthread.c:778
        thread = <optimized out>
#6  0x00007ff26d0246aa in start_thread (arg=0x7ff25ffff700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7ff25ffff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140678969423616, 4664495752087760706, 0, 140679059335359, 140678969424320, 140678969511968, -4656966296884056254, -4656928547676852414}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ff26cd59eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 3 (LWP 6909):
#0  0x00007ff26cd4e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ff26d5c122c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7ff2580008c0, timeout=<optimized out>, context=0x7ff260014780) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:4135
        poll_func = 0x7ff26d5d0140 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x7ff260014780, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7ff2580008c0
#3  0x00007ff26d5c133c in g_main_context_iteration (context=0x7ff260014780, may_block=may_block@entry=1) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3901
        retval = <optimized out>
#4  0x00007ff26d5c1379 in glib_worker_main (data=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:5672
No locals.
#5  0x00007ff26d5e7d25 in g_thread_proxy (data=0xfc8ed0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gthread.c:778
        thread = <optimized out>
#6  0x00007ff26d0246aa in start_thread (arg=0x7ff264dbe700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7ff264dbe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140679050946304, 4664495752087760706, 0, 140679059335007, 140679050947008, 0, -4656907162163712190, -4656928547676852414}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ff26cd59eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 2 (LWP 6908):
#0  0x00007ff26cd4e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007ff26d5c122c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7ff2600010e0, timeout=<optimized out>, context=0xfce040) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:4135
        poll_func = 0x7ff26d5d0140 <g_poll>
#2  g_main_context_iterate (context=context@entry=0xfce040, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7ff2600010e0
#3  0x00007ff26d5c133c in g_main_context_iteration (context=0xfce040, may_block=1) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3901
        retval = <optimized out>
#4  0x00007ff2655c728d in ?? () from /tmp/apport_sandbox_6yjaO3/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#5  0x00007ff26d5e7d25 in g_thread_proxy (data=0xfc88f0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gthread.c:778
        thread = <optimized out>
#6  0x00007ff26d0246aa in start_thread (arg=0x7ff2655bf700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7ff2655bf700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140679059339008, 4664495752087760706, 0, 140722717407903, 140679059339712, 16572480, -4656910462309208254, -4656928547676852414}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ff26cd59eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 1 (LWP 6907):
#0  0x00007ff26d5c78fb in _g_log_abort (breakpoint=1) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmessages.c:324
No locals.
#1  g_logv (log_domain=0x7ff26d8c15b6 "GLib-GObject", log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>, args=args@entry=0x7ffc8f9536c0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmessages.c:1081
        domain = 0x0
        data = 0x0
        depth = 1
        log_func = 0x7ff26d5c70c0 <g_log_default_handler>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = 0
        test_level = <optimized out>
        was_fatal = <optimized out>
        was_recursion = <optimized out>
        msg = 0x1122d20 "g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed"
        msg_alloc = 0x1122d20 "g_signal_handlers_destroy: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed"
        i = 3
#2  0x00007ff26d5c7a6f in g_log (log_domain=log_domain@entry=0x7ff26d8c15b6 "GLib-GObject", log_level=log_level@entry=G_LOG_LEVEL_CRITICAL, format=format@entry=0x7ff26d612454 "%s: assertion '%s' failed") at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmessages.c:1119
        args = {{gp_offset = 40, fp_offset = 48, overflow_arg_area = 0x7ffc8f9537a0, reg_save_area = 0x7ffc8f9536e0}}
#3  0x00007ff26d5c7aa9 in g_return_if_fail_warning (log_domain=log_domain@entry=0x7ff26d8c15b6 "GLib-GObject", pretty_function=pretty_function@entry=0x7ff26d8c7fb0 <__func__.13483> "g_signal_handlers_destroy", expression=expression@entry=0x7ff26d8c48e8 "G_TYPE_CHECK_INSTANCE (instance)") at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmessages.c:1128
No locals.
#4  0x00007ff26d8aea54 in g_signal_handlers_destroy (instance=instance@entry=0xfdd270) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:2676
        hlbsa = <optimized out>
        __func__ = "g_signal_handlers_destroy"
#5  0x00007ff26d89aa0d in g_object_real_dispose (object=0xfdd270) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gobject.c:1025
No locals.
#6  0x00007ff26d89b1d5 in g_object_unref (_object=0xfdd270) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gobject.c:3143
        weak_locations = 0x0
        old_ref = <optimized out>
        object = 0xfdd270
#7  0x00007ff26d896684 in _g_closure_invoke_va (closure=closure@entry=0xfbec10, return_value=return_value@entry=0x0, instance=instance@entry=0x101f9d0, args=args@entry=0x7ffc8f953a90, n_params=<optimized out>, param_types=0x0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gclosure.c:864
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        real_closure = 0xfbebf0
        __func__ = "_g_closure_invoke_va"
#8  0x00007ff26d8b05a6 in g_signal_emit_valist (instance=0x101f9d0, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7ffc8f953a90) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3281
        return_accu = <optimized out>
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x0
        emission = {next = 0x7ffc8f953c90, instance = 0x101f9d0, ihint = {signal_id = 147, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 16977600}
        signal_id = 147
        instance_type = <optimized out>
        emission_return = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 4
        static_scope = 0
        fastpath_handler = <optimized out>
        closure = <optimized out>
        run_type = <optimized out>
        l = <optimized out>
        fastpath = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __func__ = "g_signal_emit_valist"
#9  0x00007ff26d8b0c8f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3428
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7ffc8f953b70, reg_save_area = 0x7ffc8f953ab0}}
#10 0x00007ff26e3be285 in gtk_real_button_released (button=0x101f9d0) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkbutton.c:1712
No locals.
#11 0x00007ff26d896684 in _g_closure_invoke_va (closure=closure@entry=0x1031f70, return_value=return_value@entry=0x0, instance=instance@entry=0x101f9d0, args=args@entry=0x7ffc8f953d90, n_params=<optimized out>, param_types=0x0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gclosure.c:864
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        real_closure = 0x1031f50
        __func__ = "_g_closure_invoke_va"
#12 0x00007ff26d8b05a6 in g_signal_emit_valist (instance=0x101f9d0, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7ffc8f953d90) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3281
        return_accu = <optimized out>
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        accumulator = 0x0
        emission = {next = 0x7ffc8f953fe0, instance = 0x101f9d0, ihint = {signal_id = 146, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 16977600}
        signal_id = 146
        instance_type = <optimized out>
        emission_return = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        rtype = 4
        static_scope = 0
        fastpath_handler = <optimized out>
        closure = <optimized out>
        run_type = <optimized out>
        l = <optimized out>
        fastpath = <optimized out>
        instance_and_params = <optimized out>
        signal_return_type = <optimized out>
        param_values = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __func__ = "g_signal_emit_valist"
#13 0x00007ff26d8b0c8f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3428
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7ffc8f953e70, reg_save_area = 0x7ffc8f953db0}}
#14 0x00007ff26e3bd1d9 in gtk_button_button_release (widget=widget@entry=0x101f9d0, event=<optimized out>) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkbutton.c:1604
        button = 0x101f9d0
#15 0x00007ff26e463e5c in _gtk_marshal_BOOLEAN__BOXED (closure=0xfba500, return_value=0x7ffc8f954010, n_param_values=<optimized out>, param_values=0x7ffc8f954070, invocation_hint=<optimized out>, marshal_data=<optimized out>) at gtkmarshalers.c:86
        callback = 0x7ff26e3bd1c0 <gtk_button_button_release>
        cc = 0xfba500
        data1 = 0x101f9d0
        data2 = <optimized out>
        v_return = <optimized out>
        __func__ = "_gtk_marshal_BOOLEAN__BOXED"
#16 0x00007ff26d896455 in g_closure_invoke (closure=closure@entry=0xfba500, return_value=return_value@entry=0x7ffc8f954010, n_param_values=2, param_values=param_values@entry=0x7ffc8f954070, invocation_hint=invocation_hint@entry=0x7ffc8f953ff0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gclosure.c:801
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        real_closure = 0xfba4e0
        __func__ = "g_closure_invoke"
#17 0x00007ff26d8a84aa in signal_emit_unlocked_R (node=node@entry=0xfba770, detail=detail@entry=0, instance=instance@entry=0x101f9d0, emission_return=emission_return@entry=0x7ffc8f954180, instance_and_params=instance_and_params@entry=0x7ffc8f954070) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3654
        accumulator = 0xfba550
        emission = {next = 0x0, instance = 0x101f9d0, ihint = {signal_id = 34, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 16977600}
        handler_list = <optimized out>
        return_accu = 0x7ffc8f954010
        accu = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 34
        max_sequential_handler_number = 72
        return_value_altered = 0
#18 0x00007ff26d8b03f9 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7ffc8f954230) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3382
        return_value = {g_type = 20, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        error = 0x0
        rtype = 20
        static_scope = 0
        instance_and_params = 0x7ffc8f954070
        signal_return_type = <optimized out>
        param_values = 0x7ffc8f954088
        i = <optimized out>
        n_params = <optimized out>
        __func__ = "g_signal_emit_valist"
#19 0x00007ff26d8b0c8f in g_signal_emit (instance=instance@entry=0x101f9d0, signal_id=<optimized out>, detail=detail@entry=0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./gobject/gsignal.c:3428
        var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7ffc8f954310, reg_save_area = 0x7ffc8f954250}}
#20 0x00007ff26e57bcdc in gtk_widget_event_internal (widget=widget@entry=0x101f9d0, event=event@entry=0x10f8ec0) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkwidget.c:5017
        signal_num = <optimized out>
        return_val = 0
#21 0x00007ff26e57bfb7 in IA__gtk_widget_event (widget=widget@entry=0x101f9d0, event=event@entry=0x10f8ec0) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkwidget.c:4814
        __func__ = "IA__gtk_widget_event"
#22 0x00007ff26e4625f4 in IA__gtk_propagate_event (widget=0x101f9d0, event=0x10f8ec0) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkmain.c:2520
        tmp = <optimized out>
        handled_event = <optimized out>
        __func__ = "IA__gtk_propagate_event"
#23 0x00007ff26e4629ab in IA__gtk_main_do_event (event=0x10f8ec0) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkmain.c:1710
        event_widget = <optimized out>
        grab_widget = 0x101f9d0
        window_group = <optimized out>
        rewritten_event = <optimized out>
        tmp_list = <optimized out>
        __func__ = "IA__gtk_main_do_event"
#24 0x00007ff26e0d6c0c in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gdk/x11/gdkevents-x11.c:2425
        display = <optimized out>
        event = 0x10f8ec0
#25 0x00007ff26d5c1037 in g_main_dispatch (context=0xfb2510) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3154
        dispatch = 0x7ff26e0d6bc0 <gdk_event_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        source = 0xfb2420
        current = 0xfbdc20
        i = 0
#26 g_main_context_dispatch (context=context@entry=0xfb2510) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3769
No locals.
#27 0x00007ff26d5c1290 in g_main_context_iterate (context=0xfb2510, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:3840
        max_priority = 2147483647
        timeout = 100
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 3
        fds = 0xfbefd0
#28 0x00007ff26d5c15b2 in g_main_loop_run (loop=0xfbeff0) at /build/glib2.0-hcw3A1/glib2.0-2.45.7/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#29 0x00007ff26e461a07 in IA__gtk_main () at /build/gtk+2.0-xmBAGF/gtk+2.0-2.24.28/gtk/gtkmain.c:1282
        tmp_list = 0x0
        functions = 0x0
        init = <optimized out>
        loop = 0xfbeff0
#30 0x0000000000404ca5 in main (argc=1, argv=0x7ffc8f9546a8) at daemon.c:1712
        daemon = 0xfc7350
        connection = <optimized out>
        bus_proxy = <optimized out>
        error = 0x0
        res = <optimized out>
        request_name_result = 1