Hey, I've got a Phonix Helix Board 12 Universal mixer with integrated USB/FireWire interface. Using FireWire, it works properly, but using USB I'm experiencing strange issues which I'm trying to sort out (it should be UAC2 compliant). I tested the device with PulseAudio and I observed the following: Playback through the device only works as long as pavucontrol is running. If I close pavucontrol, sound output (not playback!) stops about five seconds later. The player (tested with Audacious) still plays. As soon as I open pavucontrol, sound output is restored. I'm not sure whether this is a pulseaudio or ALSA issue, but I'm pretty certain that, using the list, I can get a clue on what pavucontrol is doing that keeps my device outputting sound? Does it maybe poll or output any values on a regular basis? Note that according to alsamixer, there are no controls available. Thanks, Andreas
