#0  0x00007f9db6062a48 in g_settings_get_enum () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#1  0x00007f9daf7e4b88 in update_clock (data=0x5646a2d3efa0) at gnome-wall-clock.c:345
  [Error: gnome-wall-clock.c was not found in source tree]
#2  0x00007f9db5b08f75 in g_closure_invoke () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3  0x00007f9db5b1af82 in signal_emit_unlocked_R () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4  0x00007f9db5b23bcc in g_signal_emit_valist () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007f9db5b23faf in g_signal_emit () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007f9db60613a6 in g_settings_real_change_event () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007f9db05d8e18 in ffi_call_unix64 () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libffi.so.6
#8  0x00007f9db05d887a in ffi_call () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libffi.so.6
#9  0x00007f9db5b09c8a in g_cclosure_marshal_generic_va () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007f9db5b091a4 in _g_closure_invoke_va () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007f9db5b23391 in g_signal_emit_valist () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f9db5b23faf in g_signal_emit () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007f9db6060fe4 in settings_backend_changed () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#14 0x00007f9db605c72a in g_settings_backend_invoke_closure () from /tmp/apport_sandbox_SwbrDq/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#15 0x00007f9db583068a in g_main_context_dispatch () from /tmp/apport_sandbox_SwbrDq/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f9db5830a40 in g_main_context_iterate.isra () from /tmp/apport_sandbox_SwbrDq/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f9db5830d62 in g_main_loop_run () from /tmp/apport_sandbox_SwbrDq/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f9db71ad88c in meta_run () at core/main.c:537
#19 0x00005646a199c247 in main (argc=<optimized out>, argv=<optimized out>) at main.c:471
  466: 
  467:   _shell_global_init ("session-mode", session_mode, NULL);
  468: 
  469:   shell_prefs_init ();
  470: 
  471:   ecode = meta_run ();
  472: 
  473:   if (g_getenv ("GNOME_SHELL_ENABLE_CLEANUP"))
  474:     {
  475:       g_printerr ("Doing final cleanup...\n");
  476:       g_object_unref (shell_global_get ());