Hi there, I'm new to PA so please forgive me if what I said have no much sense. I'm using PA 0.9.22 + UCM patches from Margarita Olaya in an Ubuntu Maverik FS. And I have an alsa UCM profile that sets the playback controls and define 2 devices (Headset and Handset), so I can manually change between these two profiles using gnome-sound-preferences. PA shows them as different profiles Playback__Handset and Playback__Headset. The issue is that if I change profiles on a 'live stream' the audio is correctly routed every time, but after a couple of tries it starts to get distorted and I can see a lot of buffer underruns and 'Requested to rewind'. I know there is a 'module-rescue-streams' that does the stream 're-routing' when the sink it is playing at dies, and this is exactly what happens when I do change profiles, the old-sink is deleted and a new sink is created, both have the same properties but a different name and each one set different alsa controls. D: sink.c: Processing rewind... D: sink-input.c: Have to rewind 208 bytes on render memblockq. D: sink-input.c: Have to rewind 184 bytes on implementor. D: source.c: Processing rewind... E: protocol-native.c: handle_seek: 0 -- 1 D: protocol-native.c: Requesting rewind due to rewrite. D: alsa-sink.c: Requested to rewind 1360 bytes. D: alsa-sink.c: Limited to 1360 bytes. D: alsa-sink.c: before: 170 D: alsa-sink.c: after: 170 D: alsa-sink.c: Rewound 1360 bytes. D: sink.c: Processing rewind... D: sink-input.c: Have to rewind 1360 bytes on render memblockq. D: sink-input.c: Have to rewind 1256 bytes on implementor. I'm playing the file with a simple gstreamer pipeline: gst-launch playbin2 uri=file:///home/ubuntu/DaftPunk_Homework_AroundTheWorld.mp3 So my questions are: Can I fix the 'Underruns' increasing the default latency or buffer size? if so, Can I do this through a configuration parameter in default.pa/daemon.conf/client.conf? Or is this 'on-the-fly' sink change simply not supported? and the 'module-rescue-streams' is not really a feature but a 'security harness'? Thanks and regards, Alejandro.
