USB sound card issues

[Valdis Kl=?utf-8?Q?=c4=93?=tnieks]

On Tue, 08 Jun 2021 16:20:07 +0530, Muni Sekhar said:

> $ arecord --device hw:1,0 --channels 1 --format S16_LE --rate 32000_Hz x.wav
> Recording WAVE 'x.wav' : Signed 16 bit Little Endian, Rate 32000 Hz, Mono
> arecord: pcm_read:2032: read error: Input/output error

Always check the obvious stuff first  does the card support S16_LE 32Khz data?
And if it's configurable for multiple formats, was it set for the correct one?

Does wireshark or other USB snoop program show any traffic at all?
Does the record die immediately, or hang for a few seconds and timeout?
Does 'arecord -v' or arecord -vv' tell us anything more about the situation?
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