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Issue created by Jörg Müller@neXyon

PulseAudio playback in Blender corrupts sound in other applications

As I have written on the mailing list already:

I've developed a PulseAudio backend [1] for Blender which is going to be released with Blender 3.0 and should be the default audio backend on Linux.

I've developed the backend based on the documentation [2] and looking at some code of other implementations [3,4], but I'm not sure if I did everything correctly. It works on my end, but some users are reporting that it now distorts audio playback on their system [5].

Basically I create a stream that I cork while there is no playback. I'm using a pa_mainloop object that is iterated in an own thread, to avoid deadlocks with the locking mechanism of the underlying audio device/backend code.

I hoped someone could have a quick look at my implementation [1] and check if I made a mistake using the API. Or maybe there is another reason for the issues that some people are experiencing? Thanks for your help already in advance!

I discussed the issue on IRC with @arun who told me that my implementation should be fine. However, the issue still persists and more users seem to be affected [6]. As discussed on IRC, I asked the user to provide a log and I got one at the bottom of the first bug report [5], but I'll also attach it here: pulse.log. Searching for Blender brings one to the important bits I guess. It would be great if we could get this sorted! Thanks already for your help!

Edited by Jörg Müller
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