(gdb) bt
#0  0x00007ffff6f93729 in __GI___poll (fds=fds@entry=0x7fffffffd288, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff6e64917 in poll (__timeout=-1, __nfds=1, __fds=0x7fffffffd288) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007ffff6e64917 in _xcb_conn_wait (c=c@entry=0x5555555ea030, cond=cond@entry=0x7fffffffd3a0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:479
#3  0x00007ffff6e6625f in wait_for_reply (c=c@entry=0x5555555ea030, request=request@entry=16991, e=e@entry=0x7fffffffd460) at ../../src/xcb_in.c:516
#4  0x00007ffff6e663d1 in xcb_wait_for_reply64 (c=0x5555555ea030, request=16991, e=0x7fffffffd460) at ../../src/xcb_in.c:560
#5  0x00007ffff7e96e38 in _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007ffff7e8d13e in XQueryPointer () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007ffff75c3bd1 in gdk_x11_device_core_query_state (device=<optimized out>, window=<optimized out>, root_window=0x0, child_window=0x7fffffffd6d0, root_x=0x0, root_y=0x0, win_x=0x7fffffffd6f8, win_y=0x7fffffffd700, mask=0x7fffffffd6f4) at ../../../../../gdk/x11/gdkdevice-core-x11.c:319
#8  0x00007ffff75e22c5 in gdk_window_x11_get_device_state (mask=<optimized out>, y=<optimized out>, x=<optimized out>, device=<optimized out>, window=<optimized out>) at ../../../../../gdk/x11/gdkwindow-x11.c:3351
#9  0x00007ffff75e22c5 in gdk_window_x11_get_device_state (window=<optimized out>, device=<optimized out>, x=<optimized out>, y=<optimized out>, mask=<optimized out>) at ../../../../../gdk/x11/gdkwindow-x11.c:3339
#10 0x00007ffff75b5cf4 in gdk_window_get_device_position_double (window=0x5555556074c0 [GdkX11Window], device=0x5555555de970 [GdkX11DeviceCore], x=x@entry=0x7fffffffd758, y=y@entry=0x7fffffffd760, mask=0x0) at ../../../../gdk/gdkwindow.c:5026
#11 0x00007ffff75c3d13 in gdk_x11_device_core_get_state (device=<optimized out>, window=<optimized out>, axes=0x0, mask=<optimized out>) at ../../../../../gdk/x11/gdkdevice-core-x11.c:207
#12 0x00007ffff75a3a3c in gdk_event_request_motions (event=event@entry=0x7fffe400a670) at ../../../../gdk/gdkevents.c:1798
#13 0x00007ffff79a0b14 in gtk_tooltip_handle_event_internal (event=event@entry=0x7fffe400a670) at ../../../../gtk/gtktooltip.c:1350
#14 0x00007ffff79a1614 in _gtk_tooltip_handle_event (event=event@entry=0x7fffe400a670) at ../../../../gtk/gtktooltip.c:1308
#15 0x00007ffff78a0cb5 in gtk_main_do_event (event=0x7fffe400a670) at ../../../../gtk/gtkmain.c:1952
#16 0x00007ffff78a0cb5 in gtk_main_do_event (event=<optimized out>) at ../../../../gtk/gtkmain.c:1685
#17 0x00007ffff75a25e5 in _gdk_event_emit (event=event@entry=0x7fffe400a670) at ../../../../gdk/gdkevents.c:73
#18 0x00007ffff75d3292 in gdk_event_source_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at ../../../../../gdk/x11/gdkeventsource.c:367
#19 0x00007ffff70deaae in g_main_dispatch (context=0x5555555e0a50) at ../../../glib/gmain.c:3189
#20 0x00007ffff70deaae in g_main_context_dispatch (context=context@entry=0x5555555e0a50) at ../../../glib/gmain.c:3854
#21 0x00007ffff70ded48 in g_main_context_iterate (context=0x5555555e0a50, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3927
#22 0x00007ffff70df042 in g_main_loop_run (loop=0x555555897e80) at ../../../glib/gmain.c:4123
#23 0x00007ffff789fe75 in gtk_main () at ../../../../gtk/gtkmain.c:1323
#24 0x0000555555580b0b in  ()
#25 0x0000555555580d26 in  ()
#26 0x00007ffff70db323 in g_source_callback_unref (cb_data=0x555555660880) at ../../../glib/gmain.c:1553
#27 0x00007ffff70db323 in g_source_callback_unref (cb_data=0x555555660880) at ../../../glib/gmain.c:1546
#28 0x00007ffff70dbd5e in g_source_destroy_internal (source=0x55555566b840, context=0x5555555e0a50, have_lock=1) at ../../../glib/gmain.c:1238
#29 0x00007ffff70de9e8 in g_main_dispatch (context=0x5555555e0a50) at ../../../glib/gmain.c:3213
#30 0x00007ffff70de9e8 in g_main_context_dispatch (context=context@entry=0x5555555e0a50) at ../../../glib/gmain.c:3854
#31 0x00007ffff70ded48 in g_main_context_iterate (context=context@entry=0x5555555e0a50, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3927
#32 0x00007ffff70deddc in g_main_context_iteration (context=context@entry=0x5555555e0a50, may_block=may_block@entry=1) at ../../../glib/gmain.c:3988
#33 0x00007ffff72e08bd in g_application_run (application=0x5555555dc150 [XfdesktopApplication], argc=<optimized out>, argv=0x7fffffffe118) at ../../../gio/gapplication.c:2516
#34 0x00005555555701a8 in main ()
