[pulseaudio-tickets] [Bug 99062] PulseAudio crashes with Digigram VX222 card

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99062

--- Comment #2 from Tanu Kaskinen <tanuk at iki.fi> ---
Did you have pavucontrol open? I ask, because the card might refuse to switch
the output rate if audio is being recorded at the same time, and pavucontrol
will record from all inputs to show the volume meters.

The kernel errors suggest that the problem happens when switching sample rate
from 44100 Hz to 48000 Hz. Could you try the following:

First, make sure that all devices are suspended. Don't play any music, don't
have pavucontrol open. "pactl list sinks short" and "pactl list sources short"
will show the state of all devices. The last field on each line is the device
state, which should be "SUSPENDED".

Then, start playing silence at 44100 Hz: "pacat
--device=alsa_output.pci-0000_09_01.0.analog-stereo --rate=44100 /dev/zero".
Keep that command running, and run "paplay somefile.wav" (ogg and flac files
are ok too) to verify that the audio is ok.

Stop pacat and paplay. Check with "pactl list sinks short" again that
everything is suspended (after stopping playing, the sink will stay in the
"IDLE" state for a few seconds, but it should quickly change to "SUSPENDED").

Assuming that no problems have been observed so far, start playing silence at
48000 Hz: "pacat --device=alsa_output.pci-0000_09_01.0.analog-stereo
--rate=48000 /dev/zero". Again, keep that command running and check if audio is
ok by playing some non-silence audio file.

If there are still no problems, let's check if recording from the sound card
causes trouble. Make sure again that everything is suspended, then run "parec
--device=alsa_input.pci-0000_09_01.0.analog-stereo --rate=44100 > /dev/null".
Then play silence at 48000 Hz: "pacat
--device=alsa_output.pci-0000_09_01.0.analog-stereo --rate=48000 /dev/zero".
Does that cause errors? If it seems to work, is sound ok if you try to play a
non-silence audio file while pacat keeps playing silence? What rate does "pactl
list sinks short" show?

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