.
Thread 3 (LWP 31323):
#0  0x00007fb3e9e9f3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fb3ea6e4514 in g_main_context_poll (priority=2147483647, n_fds=3, fds=0x7fb3d40010c0, timeout=-1, context=0x7fb3dc011100) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3999
        poll_func = 0x7fb3ea6f31c0 <g_poll>
#2  g_main_context_iterate (context=0x7fb3dc011100, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3700
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 3
        fds = 0x7fb3d40010c0
#3  0x00007fb3ea6e497a in g_main_loop_run (loop=0x7fb3dc011090) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3899
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007fb3eb63bbd6 in gdbus_shared_thread_func (user_data=0x7fb3dc0110d0) at /build/buildd/glib2.0-2.37.0/./gio/gdbusprivate.c:278
        data = 0x7fb3dc0110d0
#5  0x00007fb3ea7087a5 in g_thread_proxy (data=0x1557990) at /build/buildd/glib2.0-2.37.0/./glib/gthread.c:798
        thread = 0x1557990
#6  0x00007fb3ea181f8e in start_thread (arg=0x7fb3e150e700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7fb3e150e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140410556049152, 4691696074173220468, 0, 140410757337184, 140410564438176, 4096, -4721036738346056076, -4721016468343454092}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fb3e9eabe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 2 (LWP 31320):
#0  0x00007fb3e9e9f3cd in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1  0x00007fb3ea6e4514 in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7fb3dc0010e0, timeout=-1, context=0x154fb60) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3999
        poll_func = 0x7fb3ea6f31c0 <g_poll>
#2  g_main_context_iterate (context=context@entry=0x154fb60, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3700
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7fb3dc0010e0
#3  0x00007fb3ea6e461c in g_main_context_iteration (context=0x154fb60, may_block=1) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3766
        retval = <optimized out>
#4  0x00007fb3e1d16a1d in ?? () from /tmp/apport_sandbox_r16rMA/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#5  0x00007fb3ea7087a5 in g_thread_proxy (data=0x1504400) at /build/buildd/glib2.0-2.37.0/./glib/gthread.c:798
        thread = 0x1504400
#6  0x00007fb3ea181f8e in start_thread (arg=0x7fb3e1d0f700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7fb3e1d0f700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140410564441856, 4691696074173220468, 0, 140410757337184, 140735749827456, 4096, -4721035640445041036, -4721016468343454092}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007fb3e9eabe1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
.
Thread 1 (LWP 31312):
#0  0x00000000004117a6 in bubble_get_id (self=self@entry=0x1547470) at bubble.c:3100
        __inst = 0x1547470
        __t = 22446016
        __r = <optimized out>
#1  0x000000000041cd61 in stack_notify_handler (self=0x1660cf0, app_name=0x1669f90 "NetworkManager", id=<optimized out>, icon=0x152b4f0 "notification-network-wireless-disconnected", summary=<optimized out>, body=<optimized out>, actions=0x1636df0, hints=0x15b52a0, timeout=-1, context=0x164a490) at stack.c:776
        bubble = 0x1547470
        data = <optimized out>
        compat = <optimized out>
        pixbuf = <optimized out>
        new_bubble = <optimized out>
        turn_into_dialog = 0
        body = <optimized out>
        hints = 0x15b52a0
        actions = 0x1636df0
        icon = 0x152b4f0 "notification-network-wireless-disconnected"
        id = <optimized out>
        self = 0x1660cf0
        context = 0x164a490
        timeout = -1
        summary = <optimized out>
        app_name = 0x1669f90 "NetworkManager"
#2  0x000000000041b2f2 in dbus_glib_marshal_stack_VOID__STRING_UINT_STRING_STRING_STRING_BOXED_BOXED_INT_POINTER (closure=0x7fff986031f0, return_value=0x10, n_param_values=2863311530, param_values=0x1632200, invocation_hint=0x14dbb50, marshal_data=0x41c830 <stack_notify_handler>) at stack-glue.h:102
        data1 = 0x1660cf0
        data2 = 0x1567fc0
        __PRETTY_FUNCTION__ = "dbus_glib_marshal_stack_VOID__STRING_UINT_STRING_STRING_STRING_BOXED_BOXED_INT_POINTER"
#3  0x00007fb3ec8f57dd in invoke_object_method (message=0x1765da0, connection=0x15a5810, method=0x428720 <dbus_glib_stack_methods>, object_info=0x4286e0 <dbus_glib_stack_object_info>, object=0x1660cf0) at dbus-gobject.c:1899
        had_error = <optimized out>
        value_array = 0x159fd40
        gerror = 0x0
        closure = {ref_count = 0, meta_marshal_nouse = 0, n_guards = 0, n_fnotifiers = 0, n_inotifiers = 0, in_inotify = 0, floating = 0, derivative_flag = 0, in_marshal = 0, is_invalid = 0, marshal = 0x0, data = 0x0, notifiers = 0x0}
        out_param_pos = <optimized out>
        have_retval = 0
        send_reply = 1
        in_signature = 0x1654320 "susssasa{sv}i"
        out_param_count = <optimized out>
        out_param_gvalue_pos = <optimized out>
        retval_signals_error = 0
        arg_metadata = <optimized out>
        is_async = <optimized out>
        out_param_values = 0x0
        return_value = {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}}}
        out_param_gvalues = 0x0
        reply = 0x0
        retval_is_synthetic = 0
        retval_is_constant = 0
#4  object_registration_message (connection=0x15a5810, message=message@entry=0x1765da0, user_data=user_data@entry=0x159fa40) at dbus-gobject.c:2161
        pspec = <optimized out>
        object = 0x1660cf0
        setter = <optimized out>
        getter = <optimized out>
        getall = <optimized out>
        s = <optimized out>
        requested_propname = <optimized out>
        wincaps_propiface = <optimized out>
        iter = {dummy1 = 0x0, dummy2 = 0x0, dummy3 = 0, dummy4 = 0, dummy5 = 1, dummy6 = 0, dummy7 = 23405584, dummy8 = 0, dummy9 = 23405424, dummy10 = 0, dummy11 = 23405504, pad1 = 0, pad2 = 0, pad3 = 0x0}
        method = 0x428720 <dbus_glib_stack_methods>
        object_info = 0x4286e0 <dbus_glib_stack_object_info>
        ret = <optimized out>
        o = 0x159fa40
#5  0x00007fb3ec6bf126 in _dbus_object_tree_dispatch_and_unlock (tree=0x15a5540, message=message@entry=0x1765da0, found_object=found_object@entry=0x7fff98603414) at ../../dbus/dbus-object-tree.c:862
        message_function = 0x7fb3ec8f4b70 <object_registration_message>
        user_data = 0x159fa40
        next = 0x0
        path = 0x162dda0
        exact_match = 0
        list = 0x1655cd0
        link = <optimized out>
        result = DBUS_HANDLER_RESULT_NOT_YET_HANDLED
        subtree = <optimized out>
#6  0x00007fb3ec6b1cd1 in dbus_connection_dispatch (connection=connection@entry=0x15a5810) at ../../dbus/dbus-connection.c:4672
        message = 0x1765da0
        link = <optimized out>
        filter_list_copy = 0x0
        message_link = 0x14f9d90
        result = <optimized out>
        pending = <optimized out>
        reply_serial = <optimized out>
        status = <optimized out>
        found_object = 1
        __FUNCTION__ = "dbus_connection_dispatch"
#7  0x00007fb3ec8f2c95 in message_queue_dispatch (source=source@entry=0x15a8350, callback=<optimized out>, user_data=<optimized out>) at dbus-gmain.c:90
        connection = 0x15a5810
#8  0x00007fb3ea6e4226 in g_main_dispatch (context=0x1512700) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3058
        dispatch = 0x7fb3ec8f2c80 <message_queue_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = 0x0
        cb_data = 0x0
        need_destroy = <optimized out>
        current_source_link = {data = 0x15a8350, next = 0x0}
        source = 0x15a8350
        current = 0x155d010
        i = 0
#9  g_main_context_dispatch (context=context@entry=0x1512700) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3634
No locals.
#10 0x00007fb3ea6e4578 in g_main_context_iterate (context=0x1512700, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3705
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 4
        fds = 0x15a7550
#11 0x00007fb3ea6e497a in g_main_loop_run (loop=0x1657b90) at /build/buildd/glib2.0-2.37.0/./glib/gmain.c:3899
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#12 0x00007fb3ebf18845 in gtk_main () at /build/buildd/gtk+3.0-3.8.2/./gtk/gtkmain.c:1156
        loop = 0x1657b90
#13 0x000000000040e21d in main (argc=1, argv=0x7fff986036b8) at main.c:77
        defaults = <optimized out>
        stack = 0x1660cf0
        observer = <optimized out>
        connection = 0x15a5818