[pulseaudio-tickets] [Bug 97627] Playing audio via pulseaudio fails after module-suspend-on-idle.c does its thing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97627

--- Comment #14 from Sam Morris <sam at robots.org.uk> ---
I've now observed aplay itself hanging while trying to play audio, even when
pulseaudio isn't running, though I can't reproduce that anywhere near as
reliably as I can than with PA trying to play audio. So I'm starting to suspect
the (virtual) hardware. If that's the case then maybe there's nothing that can
really be done in PA itself--though perhaps detecting that it's stuck in this
state and logging something would be possible...

Anyway, here's a backtrace:

Thread 2 (Thread 0x7ffad0e65700 (LWP 16522)):
#0  0x00007ffadab73161 in __GI_ppoll (fds=0x1130090, nfds=5, timeout=<optimized
out>, sigmask=sigmask at entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007ffadc2ce3f8 in ppoll (__ss=0x0, __timeout=<optimized out>,
__nfds=<optimized out>, __fds=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  pa_rtpoll_run (p=0x1033c40) at pulsecore/rtpoll.c:314
#3  0x00007ffad0e8ffed in thread_func (userdata=0x11302c0) at
modules/alsa/alsa-sink.c:1799
#4  0x00007ffadc069dc8 in ?? () from
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-9.0.so
#5  0x00007ffadb54e444 in start_thread (arg=0x7ffad0e65700) at
pthread_create.c:333
#6  0x00007ffadab7c20d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7ffadc6a2940 (LWP 16521)):
#0  0x00007ffadab73161 in __GI_ppoll (fds=0x10b84a0, nfds=36,
timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
#1  0x00007ffadbde833d in pa_mainloop_poll () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007ffadbde892e in pa_mainloop_iterate () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007ffadbde89e0 in pa_mainloop_run () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x0000000000406d32 in main (argc=<optimized out>, argv=<optimized out>) at
daemon/main.c:1141

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