[pulseaudio-discuss] Cannot start Pulse Audio when using ALSA plug-in as sound source

Russell Treleaven rtreleaven at bunnykick.ca
Fri Aug 9 13:56:42 UTC 2019

`aplay -L` lists pcm's with hints.
If you add a hint to your pcm does it show up in the output of `aplay -L` ?

On Fri, Aug 9, 2019 at 9:32 AM Krzysztof Cieniawski <kcieniawski at gmail.com>

> Hello!
> I am developing ALSA plug-in based on ALSA PCM External Plugin SDK.
> Plug-in is source plug and has to convert PDM signal from microphone input
> to PCM used by Linux. I have succeeded to compile it using cmake and I have
> copied it to ALSA lib directory. I have updated *.asoundrc* file and make
> right PCM connection. I am able to record sound using this plug-in with
> *arecord* command. Unfortunatelly when I start *PulseAudio* server I got
> error message:
> I: [pulseaudio] (alsa-lib)dlmisc.c: Cannot open shared library /usr/lib/aarch64-linux-gnu/alsa-lib/libasound_module_pcm_iopdm.so
> I: [pulseaudio] alsa-util.c: Error opening PCM device temp: No such device or address
> E: [pulseaudio] module.c: Failed to load module "module-alsa-source" (argument: "device=temp"): initialization failed.
> E: [pulseaudio] main.c: Module load failed.
> E: [pulseaudio] main.c: Failed to initialize daemon.
> I would like to use PulseAudio on top of my device because I am using
> Amazon Alexa which use PulseAudio. How to get things right? Where is the
> problem? If there is other solution available I would be grateful for it to.
> On the path given in this error message there is this plug-in.
> I would be very grateful for any help!
> Regards,
> Krzysztof Cieniawski
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> pulseaudio-discuss at lists.freedesktop.org
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Russell Treleaven
sip:rtreleaven at sip.bunnykick.ca;transport=tcp
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