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Reading symbols from /usr/bin/unity-control-center...Reading symbols from /usr/lib/debug/.build-id/62/4ddd76db1f1745dc2bcbd0d0f4ed73571c3f80.debug...done.
done.
[New LWP 2903]
[New LWP 2905]
[New LWP 2906]
[New LWP 2907]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `unity-control-center display'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:210
(gdb) set pagination 0
(gdb) bt full
#0  __strcmp_ssse3 () at ../sysdeps/x86_64/multiarch/../strcmp.S:210
No locals.
#1  0x00007f61067255b9 in gnome_rr_screen_get_output_by_name (screen=<optimised out>, name=0x0) at gnome-rr.c:1491
        output = 0x2d63540
        i = <optimised out>
        __FUNCTION__ = "gnome_rr_screen_get_output_by_name"
#2  0x00007f61062f3236 in get_current_modes (self=0x227d2b0) at cc-display-panel.c:515
        output = <optimised out>
#3  0x00007f61062f37b3 in rebuild_resolution_combo (self=0x227d2b0) at cc-display-panel.c:945
        i = <optimised out>
        current = <optimised out>
        output_width = 31974816
        output_height = 0
        modes = <optimised out>
        mode = <optimised out>
        preferred_id = <optimised out>
        output = <optimised out>
#4  rebuild_gui (self=0x227d2b0) at cc-display-panel.c:1002
No locals.
#5  0x00007f61062f4170 in on_output_event (area=0x1e8bc30, event=0x7fff27429960, data=0x25cd890) at cc-display-panel.c:1973
        info = <optimised out>
        output = <optimised out>
        self = 0x227d2b0
#6  0x00007f61062f8b58 in emit_input (data=<optimised out>, func=<optimised out>, y=<optimised out>, x=<optimised out>, type=<optimised out>, scroll_area=<optimised out>) at scrollarea.c:788
        event = {
          type = FOO_BUTTON_PRESS, 
          x = 443, 
          y = 90
        }
        data = <optimised out>
        func = <optimised out>
        y = <optimised out>
        type = <optimised out>
        scroll_area = <optimised out>
        x = <optimised out>
#7  process_event (scroll_area=0x1e8bc30, input_type=FOO_BUTTON_PRESS, x=443, y=90) at scrollarea.c:854
        cr = 0x2637c00
        inside = 1
        path = 0x2846cf0
        region = <optimised out>
        widget = 0x1e8bc30
        i = <optimised out>
#8  0x00007f61062f8e68 in foo_scroll_area_button_press (widget=0x1e8bc30, event=0x2d630c0) at scrollarea.c:901
        area = <optimised out>
#9  0x00007f612fa6e52e in _gtk_marshal_BOOLEAN__BOXEDv (closure=0x1e37330, return_value=0x7fff27429b00, instance=<optimised out>, args=<optimised out>, marshal_data=<optimised out>, n_params=<optimised out>, param_types=0x1e37360) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmarshalers.c:130
        cc = <optimised out>
        data1 = <optimised out>
        data2 = <optimised out>
        callback = <optimised out>
        arg0 = 0x2d630c0
        args_copy = {{
            gp_offset = 32, 
            fp_offset = 48, 
            overflow_arg_area = 0x7fff27429ce0, 
            reg_save_area = 0x7fff27429c20
          }}
        v_return = <optimised out>
        __FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXEDv"
#10 0x00007f612ebf6367 in _g_closure_invoke_va (closure=0x1e37330, return_value=0x7fff27429b00, instance=0x1e8bc30, args=0x7fff27429c08, n_params=1, param_types=0x1e37360) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./gobject/gclosure.c:831
        marshal = 0x7f612ebf48b0 <g_type_class_meta_marshalv>
        marshal_data = 0x180
        in_marshal = 0
        real_closure = 0x1e37310
        __FUNCTION__ = "_g_closure_invoke_va"
#11 0x00007f612ec0e948 in g_signal_emit_valist (instance=0x1e8bc30, signal_id=<optimised out>, detail=0, var_args=var_args@entry=0x7fff27429c08) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./gobject/gsignal.c:3219
        return_accu = 0x7fff27429b00
        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
            }}
        }
        accumulator = 0x1e37700
        emission = {
          next = 0x0, 
          instance = 0x1e8bc30, 
          ihint = {
            signal_id = 28, 
            detail = 0, 
            run_type = G_SIGNAL_RUN_LAST
          }, 
          state = EMISSION_RUN, 
          chain_type = 41116112
        }
        signal_id = <optimised out>
        instance_type = <optimised out>
        emission_return = {
          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
            }}
        }
        rtype = 20
        static_scope = 0
        fastpath_handler = <optimised out>
        closure = 0x1e37330
        run_type = <optimised out>
        l = <optimised out>
        fastpath = <optimised out>
        instance_and_params = <optimised out>
        signal_return_type = <optimised out>
        param_values = <optimised out>
        i = <optimised out>
        n_params = <optimised out>
        __FUNCTION__ = "g_signal_emit_valist"
#12 0x00007f612ec0f5a2 in g_signal_emit (instance=instance@entry=0x1e8bc30, signal_id=<optimised out>, detail=detail@entry=0) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./gobject/gsignal.c:3367
        var_args = {{
            gp_offset = 24, 
            fp_offset = 48, 
            overflow_arg_area = 0x7fff27429ce0, 
            reg_save_area = 0x7fff27429c20
          }}
#13 0x00007f612fb9cc84 in gtk_widget_event_internal (widget=widget@entry=0x1e8bc30, event=event@entry=0x2d630c0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkwidget.c:7229
        signal_num = <optimised out>
        return_val = 0
#14 0x00007f612fb9cf69 in gtk_widget_event (widget=widget@entry=0x1e8bc30, event=event@entry=0x2d630c0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkwidget.c:6891
        __FUNCTION__ = "gtk_widget_event"
#15 0x00007f612fa6bf5c in propagate_event_up (topmost=<optimised out>, event=<optimised out>, widget=0x1e8bc30) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmain.c:2416
        tmp = <optimised out>
        handled_event = <optimised out>
#16 propagate_event (widget=<optimised out>, event=0x2d630c0, captured=<optimised out>, topmost=0x0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmain.c:2524
        handled_event = 0
        propagate_func = 0x7f612fb9cee0 <gtk_widget_event>
#17 0x00007f612fa6da25 in gtk_main_do_event (event=0x2d630c0) at /build/buildd/gtk+3.0-3.12.2/./gtk/gtkmain.c:1735
        event_widget = <optimised out>
        grab_widget = 0x1e8bc30
        topmost_widget = <optimised out>
        window_group = 0x7f6118015ae0
        rewritten_event = <optimised out>
        device = <optimised out>
        tmp_list = <optimised out>
        __FUNCTION__ = "gtk_main_do_event"
#18 0x00007f612f666b12 in gdk_event_source_dispatch (source=<optimised out>, callback=<optimised out>, user_data=<optimised out>) at /build/buildd/gtk+3.0-3.12.2/./gdk/x11/gdkeventsource.c:364
        display = <optimised out>
        event = 0x2d630c0
#19 0x00007f612e925de4 in g_main_dispatch (context=0x1e606d0) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./glib/gmain.c:3064
        dispatch = 0x7f612f666af0 <gdk_event_source_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimised out>
        cb_data = 0x0
        need_destroy = <optimised out>
        source = 0x1e4c990
        current = 0x1ea0620
        i = 0
#20 g_main_context_dispatch (context=context@entry=0x1e606d0) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./glib/gmain.c:3663
No locals.
#21 0x00007f612e926028 in g_main_context_iterate (context=context@entry=0x1e606d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./glib/gmain.c:3734
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimised out>
        allocated_nfds = 3
        fds = 0x259a730
#22 0x00007f612e9260cc in g_main_context_iteration (context=0x1e606d0, context@entry=0x0, may_block=may_block@entry=1) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./glib/gmain.c:3795
        retval = <optimised out>
#23 0x00007f612eed9a4c in g_application_run (application=0x2349580, argc=argc@entry=2, argv=argv@entry=0x7fff2742a048) at /build/glib2.0-p0vG4X/glib2.0-2.41.1/./gio/gapplication.c:2115
        arguments = 0x259a730
        status = 0
        __FUNCTION__ = "g_application_run"
#24 0x0000000000407566 in main (argc=2, argv=0x7fff2742a048) at control-center.c:343
        shell = <optimised out>
        application = 0x2349580
        status = <optimised out>
(gdb) quit