[pulseaudio-tickets] [Bug 75395] Second sound hardware turned off makes pulseaudio hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75395

--- Comment #26 from Tanu Kaskinen <tanuk at iki.fi> ---
(In reply to comment #25)
> Appears to fix the issue. No freeze, no crash. Thanks, guys.
> 
> Complicated, this: Dual cards. Turn one off. Play a sound. Pulseaudio
> freezes. Turns out it is a configuration error: The combined sink cannot
> handle removing hardware, if I understand this correctly.

That's not correct - module-combine-sink does handle removing hardware (I just
verified this myself - works fine).

This sounds like a sound card driver bug that is somehow triggered by
module-combine-sink. When I asked to check with gdb where pulseaudio is
hanging, I meant getting a backtrace, which would then probably show that it's
some alsa call that is hung.

(Sorry for not being more responsive, I don't have much time for engaging with
bug reports.)

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