StacktraceTop: gvc_mixer_ui_device_get_description (op=0x0) at gvc-mixer-ui-device.c:591 on_default_sink_port_notify (object=0x212b5ea0, pspec=0x21374890, control=0x212c4408) at gvc-mixer-control.c:976 g_cclosure_marshal_VOID__PARAM (closure=0x2159ef58, return_value=0x0, n_param_values=2, param_values=0xbfa8b5a0, invocation_hint=0xbfa8b520, marshal_data=0x0) at /build/buildd/glib2.0-2.32.0/./gobject/gmarshal.c:1042 g_closure_invoke (closure=0x2159ef58, return_value=0x0, n_param_values=2, param_values=0xbfa8b5a0, invocation_hint=0xbfa8b520) at /build/buildd/glib2.0-2.32.0/./gobject/gclosure.c:777 signal_emit_unlocked_R (node=0x21192500, detail=1880, instance=0x212b5ea0, emission_return=0x0, instance_and_params=0xbfa8b5a0) at /build/buildd/glib2.0-2.32.0/./gobject/gsignal.c:3547
StacktraceTop: ui_device_ get_description (op=0x0) at gvc-mixer- ui-device. c:591 sink_port_ notify (object=0x212b5ea0, pspec=0x21374890, control=0x212c4408) at gvc-mixer- control. c:976 marshal_ VOID__PARAM (closure= 0x2159ef58, return_value=0x0, n_param_values=2, param_values= 0xbfa8b5a0, invocation_ hint=0xbfa8b520 , marshal_data=0x0) at /build/ buildd/ glib2.0- 2.32.0/ ./gobject/ gmarshal. c:1042 0x2159ef58, return_value=0x0, n_param_values=2, param_values= 0xbfa8b5a0, invocation_ hint=0xbfa8b520 ) at /build/ buildd/ glib2.0- 2.32.0/ ./gobject/ gclosure. c:777 emit_unlocked_ R (node=0x21192500, detail=1880, instance= 0x212b5ea0, emission_ return= 0x0, instance_ and_params= 0xbfa8b5a0) at /build/ buildd/ glib2.0- 2.32.0/ ./gobject/ gsignal. c:3547
gvc_mixer_
on_default_
g_cclosure_
g_closure_invoke (closure=
signal_