#0  0x0804d3cf in start_authentication (username=0x0) at lightdm-gtk-greeter.c:149
        data = 0x804e3d8 <__libc_csu_init+88> "\337\203\304\034[^_]\303\353\r\220\220\220\220\220\220\220\220\220\220\220\220\220\363\303\213\034$\303\220\220\220\220\220\220\220\220\220\220U\211\345S\203\354\004\241\314\016\005\b\203\370\377t\023\273\314\016\005\bf\220\203\353\004\377\320\213\003\203\370\377u\364\203\304\004[]\303\220\220S\203\354\b\350"
        data_length = 28
        error = 0x0
#1  0x00bc614c in g_cclosure_marshal_VOID__VOID (closure=0x8ad53b8, return_value=0x0, n_param_values=1, param_values=0x8c20dc0, invocation_hint=0xbfcba390, marshal_data=0x0) at /build/buildd/glib2.0-2.30.0/./gobject/gmarshal.c:85
        callback = 0x804dbf0 <autologin_timer_expired_cb+64>
        cc = 0x8ad53b8
        data1 = 0x8af1680
        data2 = <optimized out>
        __PRETTY_FUNCTION__ = "g_cclosure_marshal_VOID__VOID"
#2  0x00bc4c3c in g_closure_invoke (closure=0x8ad53b8, return_value=0x0, n_param_values=1, param_values=0x8c20dc0, invocation_hint=0xbfcba390) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0xbc60c0 <g_cclosure_marshal_VOID__VOID>
        marshal_data = 0x0
        in_marshal = 0
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#3  0x00bd79f0 in signal_emit_unlocked_R (node=0x8ad5250, detail=0, instance=0x8af1680, emission_return=0x0, instance_and_params=0x8c20dc0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3272
        tmp = <optimized out>
        handler = 0x8acee60
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x8af1680, ihint = {signal_id = 139, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 4}
        class_closure = 0x8aefe98
        hlist = 0x8aea7d8
        handler_list = 0x8acee60
        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 = 139
        max_sequential_handler_number = 712
        return_value_altered = 0
#4  0x00be0787 in g_signal_emit_valist (instance=0x8af1680, signal_id=139, detail=0, var_args=0xbfcba54c "\210}\276\b\a") at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x8c20dc0
        signal_return_type = 4
        param_values = 0x8c20dd4
        node = 0x8ad5250
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#5  0x00be08f3 in g_signal_emit (instance=0x8af1680, signal_id=139, detail=0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = 0xbfcba54c "\210}\276\b\a"
#6  0x00745f59 in handle_prompt_authentication (offset=0x8b, message_length=0, message=0x8ca4970 "", greeter=0x8af1680) at greeter.c:269
        sequence_number = 73
        i = <optimized out>
        username = <optimized out>
        priv = 0x8af1690
        n_messages = <optimized out>
#7  from_server_cb (source=0x8aea858, condition=G_IO_IN, data=0x8af1680) at greeter.c:431
        greeter = 0x8af1680
        message = 0x8ca4970 ""
        message_length = 20
        offset = 20
        id = <optimized out>
#8  0x007dc2ee in g_io_unix_dispatch (source=0x8aea8a0, callback=0x745c20 <read_message+384>, user_data=0x8af1680) at /build/buildd/glib2.0-2.30.0/./glib/giounix.c:166
        func = 0x745c20 <read_message+384>
        watch = 0x8aea8a0
        buffer_condition = <optimized out>
#9  0x0079625f in g_main_dispatch (context=0x8aeaec8) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
        dispatch = 0x7dc2a0 <g_io_unix_dispatch>
        was_in_call = 0
        user_data = 0x8af1680
        callback = 0x745c20 <read_message+384>
        cb_funcs = 0x84b35c <g_source_callback_funcs>
        cb_data = 0x8aea900
        current_source_link = {data = 0x8aea8a0, next = 0x0}
        need_destroy = <optimized out>
        source = 0x8aea8a0
        current = 0x8bbc1a8
        i = <optimized out>
#10 g_main_context_dispatch (context=0x8aeaec8) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
No locals.
#11 0x00796990 in g_main_context_iterate (context=0x8aeaec8, block=8016672, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
        max_priority = 2147483647
        timeout = -1
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x8bf4840
#12 0x00796f9b in g_main_loop_run (loop=0x8c18ef0) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#13 0x00267f95 in _gtk_get_lc_ctype () at /build/buildd/gtk+3.0-3.2.0/./gtk/gtkmain.c:1321
No locals.
#14 0x0804c9ce in main (argc=1, argv=0xbfcba884) at lightdm-gtk-greeter.c:983
        config = 0x8ad6f18
        monitor_geometry = {x = 0, y = 0, width = 1680, height = 1050}
        builder = 0x8b5caf0
        model = <optimized out>
        items = <optimized out>
        item = <optimized out>
        iter = {stamp = -1209434671, user_data = 0x8bb6db0, user_data2 = 0x8abb828, user_data3 = 0xdce1a0 <sse2_fast_paths>}
        renderer = <optimized out>
        menuitem = <optimized out>
        hbox = <optimized out>
        image = <optimized out>
        value = <optimized out>
        state_dir = <optimized out>
        background_pixbuf = 0x8ac8650
        background_color = {pixel = 134549492, red = 58113, green = 2052, blue = 53252}
        i = 146297552
        error = 0x0
        path = 0x8b31038
        allocation = {x = 0, y = 0, width = 54, height = 22}