Comment 2 for bug 929917

StacktraceTop:
 gvc_mixer_ui_device_set_profiles (device=0x7f0434a553b0, in_profiles=0x0) at gvc-mixer-ui-device.c:490
 create_ui_device_from_port (card=0x7f0434a59580, port=0x7f0434ee4840, control=0x7f0434c19b80) at gvc-mixer-control.c:1840
 update_card (info=<optimized out>, control=<optimized out>) at gvc-mixer-control.c:2035
 _pa_context_get_card_info_by_index_cb (context=<optimized out>, i=0x7fffd00802f0, eol=<optimized out>, userdata=<optimized out>) at gvc-mixer-control.c:2210
 context_get_card_info_callback (pd=<optimized out>, command=<optimized out>, tag=<optimized out>, t=0x7f0434cc5470, userdata=0x7f0434b7ee30) at pulse/introspect.c:920