.
Thread 2 (Thread 0x7fc4e72f1700 (LWP 2818)):
#0  0x00007fc4f4706f03 in *__GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = 18446744073709551100
        oldtype = 0
        result = <optimized out>
#1  0x00007fc4f4c23104 in g_main_context_poll (n_fds=3, fds=0x182a1b0, timeout=-1, context=0x1829e10, priority=<optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3404
        poll_func = 0x7fc4f4c33130 <g_poll>
#2  g_main_context_iterate (context=0x1829e10, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3086
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0x182a1b0
#3  0x00007fc4f4c239f2 in g_main_loop_run (loop=0x1829df0) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fc4f60fec44 in gdbus_shared_thread_func (data=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gio/gdbusprivate.c:276
No locals.
#5  0x00007fc4f4c4a3e4 in g_thread_create_proxy (data=0x1829ef0) at /build/buildd/glib2.0-2.28.6/./glib/gthread.c:1897
        thread = 0x1829ef0
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007fc4f49c8d8c in start_thread (arg=0x7fc4e72f1700) at pthread_create.c:304
        pd = 0x7fc4e72f1700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140483668940544, 8227465273676964182, 140483677329824, 140483668941248, 0, 3, -8240432498698313386, -8240394166144294570}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fc4f471404d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7fc4f76a2980 (LWP 2814)):
#0  0x00007fc4f4661d05 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
        resultvar = 0
        pid = <optimized out>
        selftid = 2814
#1  0x00007fc4f4665ab6 in *__GI_abort () at abort.c:92
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x1a29260, sa_sigaction = 0x1a29260}, sa_mask = {__val = {140483896806465, 1024, 140483894170048, 140483890465696, 140483941353936, 105, 27529968, 4294967295, 140483890948323, 140735028092472, 27529968, 3068024, 0, 27466640, 24780832, 140483896410112}}, sa_flags = -145916636, sa_restorer = 0x7fc400000005}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fc4f4c4851d in g_assertion_message (domain=<optimized out>, file=<optimized out>, line=<optimized out>, func=0x4246d0 "get_channel_map_for_card", message=0x1a41210 "assertion failed: (stream)") at /build/buildd/glib2.0-2.28.6/./glib/gtestutils.c:1358
        lstr = "390\000\377\177\000\000\216\024\304\364\304\177\000\000\200Bz\001\000\000\000\000\316NB\000\000\000\000"
        s = 0x1a412f0 ""
#3  0x00007fc4f4c48ae0 in g_assertion_message_expr (domain=0x0, file=0x42418e "gvc-speaker-test.c", line=390, func=0x4246d0 "get_channel_map_for_card", expr=<optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gtestutils.c:1369
        s = 0x0
#4  0x000000000041353c in get_channel_map_for_card (output_name=<optimized out>, card=0x17a2020, control=<optimized out>) at gvc-speaker-test.c:390
        stream = <optimized out>
        card_index = 1
        sinks = 0x1a31b90
        l = <optimized out>
        map = <optimized out>
#5  update_channel_map (speaker_test=0x17a4280) at gvc-speaker-test.c:417
        i = <optimized out>
        map = 0x0
        output_name = <optimized out>
        __PRETTY_FUNCTION__ = "update_channel_map"
#6  0x00007fc4f56798ff in object_set_property (nqueue=0x1a30640, value=0x19a2f88, pspec=0x18de4a0, object=0x17a4280) at /build/buildd/glib2.0-2.28.6/./gobject/gobject.c:1185
        tmp_value = {g_type = 24711472, data = {{v_int = 24713216, v_uint = 24713216, v_long = 24713216, v_ulong = 24713216, v_int64 = 24713216, v_uint64 = 24713216, v_float = 4.57512962e-38, v_double = 1.2209951023854228e-316, v_pointer = 0x1791800}, {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}}}
        redirect = <optimized out>
        enable_diagnostic = 0x7fc4f56a9d42 "0"
        class = 0x1a31390
        param_id = 2
#7  g_object_constructor (type=<optimized out>, n_construct_properties=0, construct_params=0x1a31830) at /build/buildd/glib2.0-2.28.6/./gobject/gobject.c:1629
        value = 0x19a2f88
        pspec = <optimized out>
        nqueue = 0x1a31390
        object = 0x17a4280
#8  0x00007fc4f567c389 in g_object_newv (object_type=26962912, n_parameters=<optimized out>, parameters=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gobject.c:1479
        cparams = 0x1a31810
        oparams = 0x1a317e0
        nqueue = 0x0
        object = <optimized out>
        class = 0x1a31390
        unref_class = 0x0
        slist = <optimized out>
        n_total_cparams = <optimized out>
        n_cparams = 2
        n_oparams = <optimized out>
        n_cvalues = 0
        cvalues = <optimized out>
        clist = <optimized out>
        newly_constructed = <optimized out>
        i = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_newv"
#9  0x00007fc4f567d321 in g_object_new_valist (object_type=26962912, first_property_name=<optimized out>, var_args=0x7fff6d5b62b0) at /build/buildd/glib2.0-2.28.6/./gobject/gobject.c:1596
        class = 0x1a31390
        params = 0x19a2f60
        name = <optimized out>
        object = <optimized out>
        n_params = <optimized out>
        n_alloced_params = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_new_valist"
#10 0x00007fc4f567d621 in g_object_new (object_type=26962912, first_property_name=0x424174 "card") at /build/buildd/glib2.0-2.28.6/./gobject/gobject.c:1311
        var_args = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7fff6d5b63a0, reg_save_area = 0x7fff6d5b62d0}}
        __PRETTY_FUNCTION__ = "g_object_new"
#11 0x00000000004141c8 in gvc_speaker_test_new (control=0x1791800, card=0x17a2020) at gvc-speaker-test.c:509
        speaker_test = <optimized out>
        __PRETTY_FUNCTION__ = "gvc_speaker_test_new"
#12 0x00000000004102e3 in on_test_speakers_clicked (widget=<optimized out>, user_data=<optimized out>) at gvc-mixer-dialog.c:1532
        dialog = 0x17a4010
        card = 0x17a2020
        profile = <optimized out>
        d = 0x179d8a0
        speaker_test = <optimized out>
        container = <optimized out>
        title = 0x19a43e0 "\220\253n\001"
#13 0x00007fc4f567781c in g_closure_invoke (closure=0x19a6200, return_value=0x0, n_param_values=1, param_values=0x19ece40, invocation_hint=0x7fff6d5b6520) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#14 0x00007fc4f5689019 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x181c9e0, emission_return=0x0, instance_and_params=0x19ece40) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3252
        tmp = <optimized out>
        handler = 0x18c0040
        accumulator = 0x0
        emission = {next = 0x7fff6d5b6930, instance = 0x181c9e0, ihint = {signal_id = 217, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x17feaf0
        handler_list = 0x18c0040
        return_accu = 0x0
        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}}}
        signal_id = 217
        max_sequential_handler_number = 595
        return_value_altered = 0
#15 0x00007fc4f5692258 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2983
        instance_and_params = 0x19ece40
        signal_return_type = 4
        param_values = 0x19ece58
        node = 0x17febf0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#16 0x00007fc4f569241f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff6d5b6810, reg_save_area = 0x7fff6d5b6750}}
#17 0x00007fc4f567781c in g_closure_invoke (closure=0x1897700, return_value=0x0, n_param_values=1, param_values=0x1a472c0, invocation_hint=0x7fff6d5b6940) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#18 0x00007fc4f5689019 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x18910f0, emission_return=0x0, instance_and_params=0x1a472c0) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3252
        tmp = <optimized out>
        handler = 0x18b6290
        accumulator = 0x0
        emission = {next = 0x7fff6d5b6d60, instance = 0x18910f0, ihint = {signal_id = 105, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x16ef510
        handler_list = 0x18b6290
        return_accu = 0x0
        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}}}
        signal_id = 105
        max_sequential_handler_number = 595
        return_value_altered = 1
#19 0x00007fc4f5692258 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2983
        instance_and_params = 0x1a472c0
        signal_return_type = 4
        param_values = 0x1a472d8
        node = 0x16ef610
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#20 0x00007fc4f569241f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff6d5b6c30, reg_save_area = 0x7fff6d5b6b70}}
#21 0x00007fc4f66b6b45 in gtk_real_button_released (button=0x18910f0) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkbutton.c:1725
No locals.
#22 0x00007fc4f567781c in g_closure_invoke (closure=0x176c420, return_value=0x0, n_param_values=1, param_values=0x1a3fc20, invocation_hint=0x7fff6d5b6d70) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#23 0x00007fc4f56887e3 in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x18910f0, emission_return=0x0, instance_and_params=0x1a3fc20) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3182
        accumulator = 0x0
        emission = {next = 0x7fff6d5b71c0, instance = 0x18910f0, ihint = {signal_id = 104, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 24555232}
        class_closure = 0x176c420
        handler_list = <optimized out>
        return_accu = 0x0
        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}}}
        signal_id = 104
        max_sequential_handler_number = 595
        return_value_altered = <optimized out>
#24 0x00007fc4f5692258 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2983
        instance_and_params = 0x1a3fc20
        signal_return_type = 4
        param_values = 0x1a3fc38
        node = 0x16ef540
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#25 0x00007fc4f569241f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff6d5b7060, reg_save_area = 0x7fff6d5b6fa0}}
#26 0x00007fc4f66b58fd in gtk_button_button_release (widget=<optimized out>, event=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkbutton.c:1617
        button = <optimized out>
#27 0x00007fc4f6760578 in _gtk_marshal_BOOLEAN__BOXED (closure=0x17529f0, return_value=0x7fff6d5b7210, n_param_values=<optimized out>, param_values=0x18c1260, invocation_hint=<optimized out>, marshal_data=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmarshalers.c:86
        callback = 0x7fc4f66b58e0 <gtk_button_button_release>
        cc = 0x17529f0
        data1 = 0x18910f0
        data2 = <optimized out>
        v_return = <optimized out>
        __PRETTY_FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXED"
#28 0x00007fc4f567781c in g_closure_invoke (closure=0x17529f0, return_value=0x7fff6d5b7210, n_param_values=2, param_values=0x18c1260, invocation_hint=0x7fff6d5b71d0) at /build/buildd/glib2.0-2.28.6/./gobject/gclosure.c:767
        marshal = <optimized out>
        marshal_data = <optimized out>
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#29 0x00007fc4f5688e1f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x18910f0, emission_return=0x7fff6d5b7380, instance_and_params=0x18c1260) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3290
        accumulator = 0x1752c80
        emission = {next = 0x0, instance = 0x18910f0, ihint = {signal_id = 34, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 24555232}
        class_closure = 0x17529f0
        handler_list = 0x0
        return_accu = 0x7fff6d5b7210
        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 = 595
        return_value_altered = 0
#30 0x00007fc4f5691fa9 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:2993
        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 = 0x18c1260
        signal_return_type = 20
        param_values = 0x18c1278
        node = 0x1752a60
        i = <optimized out>
        n_params = 1
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#31 0x00007fc4f569241f in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.28.6/./gobject/gsignal.c:3040
        var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fff6d5b74c0, reg_save_area = 0x7fff6d5b7400}}
#32 0x00007fc4f687c4d1 in gtk_widget_event_internal (widget=0x18910f0, event=0x1909260) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkwidget.c:4988
        signal_num = <optimized out>
        return_val = 0
#33 0x00007fc4f675e763 in IA__gtk_propagate_event (widget=0x18910f0, event=0x1909260) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmain.c:2495
        tmp = <optimized out>
        handled_event = <optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_propagate_event"
#34 0x00007fc4f675ea5b in IA__gtk_main_do_event (event=0x1909260) at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmain.c:1685
        event_widget = <optimized out>
        grab_widget = 0x18910f0
        window_group = <optimized out>
        rewritten_event = <optimized out>
        tmp_list = <optimized out>
        __PRETTY_FUNCTION__ = "IA__gtk_main_do_event"
#35 0x00007fc4f63d15cc in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+2.0-2.24.4/gdk/x11/gdkevents-x11.c:2377
        display = <optimized out>
        event = 0x1909260
#36 0x00007fc4f4c22bcd in g_main_dispatch (context=0x16df670) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:2440
        dispatch = 0x7fc4f63d1580 <gdk_event_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x16df580, next = 0x0}
        need_destroy = <optimized out>
        source = 0x16df580
        current = 0x178a920
        i = <optimized out>
#37 g_main_context_dispatch (context=0x16df670) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3013
No locals.
#38 0x00007fc4f4c233a8 in g_main_context_iterate (context=0x16df670, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3091
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = 13
        allocated_nfds = <optimized out>
        fds = <optimized out>
#39 0x00007fc4f4c239f2 in g_main_loop_run (loop=0x1792b30) at /build/buildd/glib2.0-2.28.6/./glib/gmain.c:3299
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#40 0x00007fc4f675daf7 in IA__gtk_main () at /build/buildd/gtk+2.0-2.24.4/gtk/gtkmain.c:1257
        tmp_list = <optimized out>
        functions = 0x0
        init = <optimized out>
        loop = 0x1792b30
#41 0x00000000004145c7 in main (argc=1, argv=0x7fff6d5b7838) at dialog-main.c:204
        error = 0x0
        control = 0x1791800
        app = 0x177fe30
        entries = {{long_name = 0x424834 "page", short_name = 112 'p', flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x62dfb0, description = 0x42482c "Startup page", arg_description = 0x4248a0 "effects|hardware|input|output|applications"}, {long_name = 0x424839 "debug", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x62dfac, description = 0x42483f "Enable debugging code", arg_description = 0x0}, {long_name = 0x4263a5 "version", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x62dfa8, description = 0x424855 "Version of this application", arg_description = 0x0}, {long_name = 0x0, short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x0, description = 0x0, arg_description = 0x0}}