Zen Pinball 1 & 2: Audio cuts out during gameplay

[Shoegzer]

Zen Pinball 1 & 2 go ingame with full audio, but eventually (usually around 1-5 minutes of gameplay) all sounds stop completely. This issue has existed for years and may have always been, but continues as of commit deb6bd3.

Update: I've noticed that setting the PPU Decoder to "Interpreter (fast)" fixes this problem (although then the game naturally plays too slow). Setting Preferred SPU Threads to "1" also fixes the problem without the speed hit. I'm guessing this may be related either to timing between the PPU and SPU, or to thread synchronization. In any event I'm willing to close the issue if others agree - I just want to be sure this at least gets seen before I do in the event that it provides a clue into a wider issue. @Nekotekina how do you feel about this?

Latest test was performed on system with linux mint 19.3 with kernel 5.3 compiled with gcc 9.2.1. Tested primarily with OpenAL but it occurs with other audio backends too.

Log, stopped once issue occurred: RPCS3.log

[Asinin3]

Still an issue?

[Shoegzer]

Yes, as confirmed with commit 42e3add. I was able to reproduce the issue almost immediately with ZP1, and while I haven't after testing for 5-10 minutes with ZP2 I assume it would eventually as well.

Again I'm not opposed to closing this since limiting SPU threads fixes the problem, though there may be value in leaving it open in the event it might help expose a greater issue.

[legluondunet]

Hello,
this bug is still present.
After some minutes playing Starwars Pinball, no more sound.
I can reproduce this bug all the time.

log joined.
rpcs3.log