StacktraceTop: ?? () notify_volume_cb (object=0xa11d138, pspec=0x98f3150, g_cclosure_marshal_VOID__PARAM () g_closure_invoke () from /usr/lib/libgobject-2.0.so.0 ?? () from /usr/lib/libgobject-2.0.so.0
StacktraceTop: marshal_ VOID__PARAM () libgobject- 2.0.so. 0 libgobject- 2.0.so. 0
?? ()
notify_volume_cb (object=0xa11d138, pspec=0x98f3150,
g_cclosure_
g_closure_invoke () from /usr/lib/
?? () from /usr/lib/