Hi!

I've been looking into how to record audio using arecord and the following audio card extension for Raspberry PI https://pinout.xyz/pinout/raspiaudio_audio_speakers_mic#. The guide in it seems to install snd_soc_googlevoicechat_soundcard driver and after recording for some minutes it throws this error:

Dec 18 15:32:17 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: snd_pcm_avail() returned a value that is exceptionally large: 7022640 bytes (18288 ms). Dec 18 15:32:17 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_soc_googlevoicehat_soundcard'. Please report this issue to the ALSA developers. Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: snd_pcm_dump(): Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: Hardware PCM card 0 'snd_rpi_googlevoicehat_soundcar' device 0 subdevice 0 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: Its setup is: Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: stream : PLAYBACK Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: access : MMAP_INTERLEAVED Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: format : S32_LE Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: subformat : STD Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: channels : 2 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: rate : 48000 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: exact rate : 48000 (48000/1) Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: msbits : 32 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: buffer_size : 65536 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: period_size : 32768 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: period_time : 682666 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: tstamp_mode : ENABLE Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: tstamp_type : MONOTONIC Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: period_step : 1 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: avail_min : 65345 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: period_event : 0 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: start_threshold : -1 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: stop_threshold : 1073741824 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: silence_threshold: 0 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: silence_size : 0 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: boundary : 1073741824 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: appl_ptr : 7938534 Dec 18 15:32:22 homepie pulseaudio[8048]: [alsa-sink-Google voiceHAT SoundCard HiFi voicehat-hifi-0] alsa-util.c: hw_ptr : 8750828

And I start the recording with the following command arecord -c 2 -r 48000 -f s32_le

AlsaInfo output is available at http://www.alsa-project.org/db/?f=17a71c8e22f097d844906274a0bd78dbf124513c. Although after inspecting the provided log it seems that the Raspberry PI board is not included in the DMI, which is supposed to be BCM2835. I can't say anything else on on other details.