The program 'metacity' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRegion (invalid Region parameter)'.
  (Details: serial 73707 error_code 140 request_code 138 (XFIXES) minor_code 10)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

Program received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff474ca6b in _g_log_abort (breakpoint=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmessages.c:325

#0  0x00007ffff474ca6b in g_logv (breakpoint=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmessages.c:325
        domain = 0x0
        data = 0x0
        depth = 1
        log_func = 0x42f4b0 <log_handler>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = 0
        test_level = <optimized out>
        was_fatal = <optimized out>
        was_recursion = <optimized out>
        msg = 0xa82500 "The program 'metacity' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadRegion (invalid Region parameter)'.\n  (Details: serial 73707 error_code 140 req"...
        msg_alloc = 0xa82500 "The program 'metacity' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadRegion (invalid Region parameter)'.\n  (Details: serial 73707 error_code 140 req"...
        i = 2
#1  0x00007ffff474ca6b in g_logv (log_domain=0x7ffff6a6c04e "Gdk", log_level=G_LOG_LEVEL_ERROR, format=<optimized out>, args=args@entry=0x7fffffffd260) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmessages.c:1080
        domain = 0x0
        data = 0x0
        depth = 1
        log_func = 0x42f4b0 <log_handler>
        domain_fatal_mask = <optimized out>
        masquerade_fatal = 0
        test_level = <optimized out>
        was_fatal = <optimized out>
        was_recursion = <optimized out>
        msg = 0xa82500 "The program 'metacity' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadRegion (invalid Region parameter)'.\n  (Details: serial 73707 error_code 140 req"...
        msg_alloc = 0xa82500 "The program 'metacity' received an X Window System error.\nThis probably reflects a bug in the program.\nThe error was 'BadRegion (invalid Region parameter)'.\n  (Details: serial 73707 error_code 140 req"...
        i = 2
#2  0x00007ffff474cbdf in g_log (log_domain=log_domain@entry=0x7ffff6a6c04e "Gdk", log_level=log_level@entry=G_LOG_LEVEL_ERROR, format=format@entry=0x7ffff6a89961 "%s") at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmessages.c:1119
Python Exception <class 'gdb.error'> Attempt to dereference a generic pointer.: 
#3  0x00007ffff6a36d88 in _gdk_x11_display_error_event (display=display@entry=0x6b6020 [GdkX11Display], error=error@entry=0x7fffffffd420)
    at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/x11/gdkdisplay-x11.c:2576
        buf = "BadRegion (invalid Region parameter)", '\000' <repeats 27 times>
        msg = <optimized out>
        display_x11 = 0x6b6020 [GdkX11Display]
        tmp_list = <optimized out>
        ignore = 0
#4  0x00007ffff6a43099 in gdk_x_error (xdisplay=0x6a9c00, error=0x7fffffffd420) at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/x11/gdkmain-x11.c:307
        error_display = 0x6b6020 [GdkX11Display]
        manager = <optimized out>
        displays = 0x96fe90
        error = 0x7fffffffd420
        xdisplay = 0x6a9c00
#5  0x00007ffff41f346d in _XError (dpy=dpy@entry=0x6a9c00, rep=rep@entry=0x6b93c0) at ../../src/XlibInt.c:1429
        rtn_val = <optimized out>
        event = 
            {type = 0, xany = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940}, xkey = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, root = 140737220936773, subwindow = 140737488344184, time = 6991440, x = 73708, y = 0, x_root = -11072, y_root = 32767, state = 4294956432, keycode = 32767, same_screen = -267416495}, xbutton = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, root = 140737220936773, subwindow = 140737488344184, time = 6991440, x = 73708, y = 0, x_root = -11072, y_root = 32767, state = 4294956432, button = 32767, same_screen = -267416495}, xmotion = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, root = 140737220936773, subwindow = 140737488344184, time = 6991440, x = 73708, y = 0, x_root = -11072, y_root = 32767, state = 4294956432, is_hint = -1 '\377', same_screen = -267416495}, xcrossing = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, root = 140737220936773, subwindow = 140737488344184, time = 6991440, x = 73708, y = 0, x_root = -11072, y_root = 32767, mode = -10864, detail = 32767, same_screen = -267416495, focus = 32767, state = 4294956184}, xfocus = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, mode = -267418555, detail = 32767}, xexpose = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, x = -267418555, y = 32767, width = -11144, height = 32767, count = 6991440}, xgraphicsexpose = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, drawable = 140737472268940, x = -267418555, y = 32767, width = -11144, height = 32767, count = 6991440, major_code = 0, minor_code = 73708}, xnoexpose = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, drawable = 140737472268940, major_code = -267418555, minor_code = 32767}, xvisibility = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, state = -267418555}, xcreatewindow = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, parent = 140737472268940, window = 140737220936773, x = -11144, y = 32767, width = 6991440, height = 0, border_width = 73708, override_redirect = 0}, xdestroywindow = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773}, xunmap = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773, from_configure = -11144}, xmap = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773, override_redirect = -11144}, xmaprequest = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, parent = 140737472268940, window = 140737220936773}, xreparent = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773, parent = 140737488344184, x = 6991440, y = 0, override_redirect = 73708}, xconfigure = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773, x = -11144, y = 32767, width = 6991440, height = 0, border_width = 73708, above = 140737488344256, override_redirect = -10864}, xgravity = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773, x = -11144, y = 32767}, xresizerequest = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, width = -267418555, height = 32767}, xconfigurerequest = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, parent = 140737472268940, window = 140737220936773, x = -11144, y = 32767, width = 6991440, height = 0, border_width = 73708, above = 140737488344256, detail = -10864, value_mask = 140737220938833}, xcirculate = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, event = 140737472268940, window = 140737220936773, place = -11144}, xcirculaterequest = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, parent = 140737472268940, window = 140737220936773, place = -11144}, xproperty = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, atom = 140737220936773, time = 140737488344184, state = 6991440}, xselectionclear = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, selection = 140737220936773, time = 140737488344184}, xselectionrequest = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, owner = 140737472268940, requestor = 140737220936773, selection = 140737488344184, target = 6991440, property = 73708, time = 140737488344256}, xselection = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, requestor = 140737472268940, selection = 140737220936773, target = 140737488344184, property = 6991440, time = 73708}, xcolormap = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, colormap = 140737220936773, new = -11144, state = 32767}, xclient = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, message_type = 140737220936773, format = -11144, data = {b = "P\256j\000\000\000\000\000\354\037\001\000\000\000\000\000\300\324\377\377", s = {-20912, 106, 0, 0, 8172, 1, 0, 0, -11072, -1}, l = {6991440, 73708, 140737488344256, 140737488344464, 140737220938833}}}, xmapping = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, request = -267418555, first_keycode = 32767, count = -11144}, xerror = {type = 0, display = 0x6a9c00, resourceid = 27269298, serial = 73707, error_code = 140 '\214', request_code = 138 '\212', minor_code = 10 '\n'}, xkeymap = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, window = 140737472268940, key_vector = "E\204\017\360\377\177\000\000x\324\377\377\377\177\000\000P\256j\000\000\000\000\000\354\037\001\000\000\000\000"}, xgeneric = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, extension = -16086388, evtype = 32767}, xcookie = {type = 0, serial = 6986752, send_event = 27269298, display = 0x11feb, extension = -16086388, evtype = 32767, cookie = 4027548741, data = 0x7fffffffd478}, pad = {140733193388032, 6986752, 27269298, 73707, 140737472268940, 140737220936773, 140737488344184, 6991440, 73708, 140737488344256, 140737488344464, 140737220938833, 140737488344216, 140737220939141, 3, 11925088, 73708, 140737488344256, 0, 0, 1, -1, 0, 0}}
        async = <optimized out>
        next = <optimized out>
#6  0x00007ffff41f03a7 in handle_error (dpy=0x6a9c00, err=0x6b93c0, in_XReply=<optimized out>) at ../../src/xcb_io.c:213
        ext = <optimized out>
        ret_code = 0
#7  0x00007ffff41f0465 in handle_response (dpy=dpy@entry=0x6a9c00, response=0x6b93c0, in_XReply=in_XReply@entry=1) at ../../src/xcb_io.c:325
        async = <optimized out>
        next = <optimized out>
#8  0x00007ffff41f1420 in _XReply (dpy=dpy@entry=0x6a9c00, rep=rep@entry=0x7fffffffd5e0, extra=extra@entry=0, discard=discard@entry=1)
    at ../../src/xcb_io.c:627
        event = <optimized out>
        req = 0xb1dc40
        response = 0xb5f660
        error = 0x0
        c = 0x6aae50
        reply = <optimized out>
        current = 0xb1dc40
        __PRETTY_FUNCTION__ = "_XReply"
#9  0x00007ffff41eccad in XSync (dpy=0x6a9c00, discard=discard@entry=0) at ../../src/Sync.c:44
        rep = 
          {type = 1 '\001', revertTo = 1 '\001', sequenceNumber = 8170, length = 0, focus = 6986752, pad1 = 0, pad2 = 6986752, pad3 = 0, pad4 = 27269298, pad5 = 0}
#10 0x00007ffff41ecd4b in _XSyncFunction (dpy=<optimized out>) at ../../src/Synchro.c:35
#11 0x0000000000415428 in free_win (cw=0xad68a0, destroy=1) at compositor/compositor-xrender.c:1993
        display = 0x96ee00
        xdisplay = 0x6a9c00
        info = 0x9099f0
#12 0x0000000000443e60 in meta_window_free (window=0xb0ce00, timestamp=timestamp@entry=7550091) at core/window.c:958
        tmp = <optimized out>
        __func__ = "meta_window_free"
#13 0x0000000000423359 in event_callback (event=0x7fffffffd920, data=0x96ee00) at core/display.c:2094
        timestamp = 7550091
        window = <optimized out>
        property_for_window = <optimized out>
        display = 0x96ee00
        frame_was_receiver = 0
        filter_out_event = 0
#14 0x0000000000467295 in filter_func (xevent=0x7fffffffd920, event=<optimized out>, data=<optimized out>) at ui/ui.c:234
#15 0x00007ffff6a3d811 in gdk_event_apply_filters (xevent=xevent@entry=0x7fffffffd920, event=event@entry=0x72c5b0, window=window@entry=0x0)
    at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/x11/gdkeventsource.c:79
        filter = 0x77a290
        node = <optimized out>
        tmp_list = 0x806080
        result = <optimized out>
#16 0x00007ffff6a3dac0 in _gdk_x11_display_queue_events (xevent=0x7fffffffd920, event_source=0x6c6a70)
    at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/x11/gdkeventsource.c:198
        dpy = 0x6a9c00
        event = 0x72c5b0
        result = GDK_FILTER_CONTINUE
        event_translator = <optimized out>
        xevent = 
            {type = 18, xany = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212}, xkey = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, state = 0, keycode = 1, same_screen = 1}, xbutton = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, state = 0, button = 1, same_screen = 1}, xmotion = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, state = 0, is_hint = 1 '\001', same_screen = 1}, xcrossing = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, mode = 0, detail = 1, same_screen = 1, focus = 0, state = 10064512}, xfocus = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, mode = 31461379, detail = 0}, xexpose = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, x = 31461379, y = 0, width = 0, height = 0, count = 0}, xgraphicsexpose = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, drawable = 212, x = 31461379, y = 0, width = 0, height = 0, count = 0, major_code = 0, minor_code = 727}, xnoexpose = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, drawable = 212, major_code = 31461379, minor_code = 0}, xvisibility = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, state = 31461379}, xcreatewindow = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379, x = 0, y = 0, width = 0, height = 0, border_width = 727, override_redirect = 617}, xdestroywindow = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379}, xunmap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, from_configure = 0}, xmap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, override_redirect = 0}, xmaprequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379}, xreparent = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, parent = 0, x = 0, y = 0, override_redirect = 727}, xconfigure = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, x = 0, y = 0, width = 0, height = 0, border_width = 727, above = 2877628089104, override_redirect = 0}, xgravity = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, x = 0, y = 0}, xresizerequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, width = 31461379, height = 0}, xconfigurerequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379, x = 0, y = 0, width = 0, height = 0, border_width = 727, above = 2877628089104, detail = 0, value_mask = 1}, xcirculate = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, place = 0}, xcirculaterequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379, place = 0}, xproperty = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, atom = 31461379, time = 0, state = 0}, xselectionclear = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, selection = 31461379, time = 0}, xselectionrequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, owner = 212, requestor = 31461379, selection = 0, target = 0, property = 2649994822359, time = 2877628089104}, xselection = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, requestor = 212, selection = 31461379, target = 0, property = 0, time = 2649994822359}, xcolormap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, colormap = 31461379, new = 0, state = 0}, xclient = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, message_type = 31461379, format = 0, data = {b = "\000\000\000\000\000\000\000\000\327\002\000\000i\002\000\000\020\003\000", s = {0, 0, 0, 0, 727, 0, 617, 0, 784, 0}, l = {0, 2649994822359, 2877628089104, 4294967296, 1}}}, xmapping = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, request = 31461379, first_keycode = 0, count = 0}, xerror = {type = 18, display = 0x11e68, resourceid = 0, serial = 6986752, error_code = 212 '\324', request_code = 0 '\000', minor_code = 0 '\000'}, xkeymap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, key_vector = "\003\020\340\001", '\000' <repeats 20 times>, "\327\002\000\000i\002\000"}, xgeneric = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, extension = 212, evtype = 0}, xcookie = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, extension = 212, evtype = 0, cookie = 31461379, data = 0x0}, pad = {140733193388050, 73320, 0, 6986752, 212, 31461379, 0, 0, 2649994822359, 2877628089104, 4294967296, 1, 10064512, 0, 10064696, 10922792, 0, 0, 0, 0, 0, 0, 0, 0}}
        xdisplay = 0x6a9c00
        event_source = 0x6c6a70
        display_x11 = 0x6b6020 [GdkX11Display]
#17 0x00007ffff6a3dac0 in _gdk_x11_display_queue_events (display=0x6b6020 [GdkX11Display])
    at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/x11/gdkeventsource.c:341
        xevent = 
            {type = 18, xany = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212}, xkey = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, state = 0, keycode = 1, same_screen = 1}, xbutton = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, state = 0, button = 1, same_screen = 1}, xmotion = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, state = 0, is_hint = 1 '\001', same_screen = 1}, xcrossing = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, root = 31461379, subwindow = 0, time = 0, x = 727, y = 617, x_root = 784, y_root = 670, mode = 0, detail = 1, same_screen = 1, focus = 0, state = 10064512}, xfocus = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, mode = 31461379, detail = 0}, xexpose = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, x = 31461379, y = 0, width = 0, height = 0, count = 0}, xgraphicsexpose = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, drawable = 212, x = 31461379, y = 0, width = 0, height = 0, count = 0, major_code = 0, minor_code = 727}, xnoexpose = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, drawable = 212, major_code = 31461379, minor_code = 0}, xvisibility = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, state = 31461379}, xcreatewindow = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379, x = 0, y = 0, width = 0, height = 0, border_width = 727, override_redirect = 617}, xdestroywindow = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379}, xunmap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, from_configure = 0}, xmap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, override_redirect = 0}, xmaprequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379}, xreparent = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, parent = 0, x = 0, y = 0, override_redirect = 727}, xconfigure = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, x = 0, y = 0, width = 0, height = 0, border_width = 727, above = 2877628089104, override_redirect = 0}, xgravity = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, x = 0, y = 0}, xresizerequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, width = 31461379, height = 0}, xconfigurerequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379, x = 0, y = 0, width = 0, height = 0, border_width = 727, above = 2877628089104, detail = 0, value_mask = 1}, xcirculate = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, event = 212, window = 31461379, place = 0}, xcirculaterequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, parent = 212, window = 31461379, place = 0}, xproperty = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, atom = 31461379, time = 0, state = 0}, xselectionclear = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, selection = 31461379, time = 0}, xselectionrequest = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, owner = 212, requestor = 31461379, selection = 0, target = 0, property = 2649994822359, time = 2877628089104}, xselection = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, requestor = 212, selection = 31461379, target = 0, property = 0, time = 2649994822359}, xcolormap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, colormap = 31461379, new = 0, state = 0}, xclient = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, message_type = 31461379, format = 0, data = {b = "\000\000\000\000\000\000\000\000\327\002\000\000i\002\000\000\020\003\000", s = {0, 0, 0, 0, 727, 0, 617, 0, 784, 0}, l = {0, 2649994822359, 2877628089104, 4294967296, 1}}}, xmapping = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, request = 31461379, first_keycode = 0, count = 0}, xerror = {type = 18, display = 0x11e68, resourceid = 0, serial = 6986752, error_code = 212 '\324', request_code = 0 '\000', minor_code = 0 '\000'}, xkeymap = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, window = 212, key_vector = "\003\020\340\001", '\000' <repeats 20 times>, "\327\002\000\000i\002\000"}, xgeneric = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, extension = 212, evtype = 0}, xcookie = {type = 18, serial = 73320, send_event = 0, display = 0x6a9c00, extension = 212, evtype = 0, cookie = 31461379, data = 0x0}, pad = {140733193388050, 73320, 0, 6986752, 212, 31461379, 0, 0, 2649994822359, 2877628089104, 4294967296, 1, 10064512, 0, 10064696, 10922792, 0, 0, 0, 0, 0, 0, 0, 0}}
        xdisplay = 0x6a9c00
        event_source = 0x6c6a70
        display_x11 = 0x6b6020 [GdkX11Display]
#18 0x00007ffff6a0cb19 in gdk_display_get_event (display=display@entry=0x6b6020 [GdkX11Display])
    at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/gdkdisplay.c:396
        __func__ = "gdk_display_get_event"
#19 0x00007ffff6a3d882 in gdk_event_source_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>)
    at /build/gtk+3.0-29jmON/gtk+3.0-3.20.5/./gdk/x11/gdkeventsource.c:363
        display = 0x6b6020 [GdkX11Display]
        event = <optimized out>
#20 0x00007ffff47461a7 in g_main_context_dispatch (context=0x6a0800) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3154
        dispatch = 0x7ffff6a3d870 <gdk_event_source_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 = 0x6c6a70
        current = 0x710630
        i = 0
#21 0x00007ffff47461a7 in g_main_context_dispatch (context=context@entry=0x6a0800) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3769
#22 0x00007ffff4746400 in g_main_context_iterate (context=0x6a0800, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3840
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 5
        fds = 0xb65870
#23 0x00007ffff4746722 in g_main_loop_run (loop=0x6a0be0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#24 0x00000000004111f1 in main (argc=1, argv=0x7fffffffe1d8) at core/main.c:568
        act = 
          {__sigaction_handler = {sa_handler = 0x42f530 <sigterm_handler>, sa_sigaction = 0x42f530 <sigterm_handler>}, sa_mask = {__val = {0 <repeats 16 times>}}, sa_flags = 0, sa_restorer = 0x0}
        empty_mask = {__val = {0 <repeats 16 times>}}
        meta_args = 
          {save_file = 0x0, display_name = 0x0, client_id = 0x0, replace_wm = <optimized out>, disable_sm = 0, print_version = <optimized out>, sync = <optimized out>, composite = <optimized out>, no_composite = <optimized out>, no_force_fullscreen = <optimized out>}
        log_domains = 
          {0x0, 0x470599 "metacity", 0x46f7d8 "Gtk", 0x46f7dc "Gdk", 0x46f7e0 "GLib", 0x46f7e5 "Pango", 0x46f7eb "GLib-GObject", 0x46f7f8 "GThread"}
        i = <optimized out>
        channel = <optimized out>