USB sound card issues

[Muni Sekhar]

On Sat, Jun 12, 2021 at 5:16 AM Valdis Klētnieks
<valdis.kletnieks at vt.edu> wrote:
>
> 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?
Yes , it supports.
> And if it's configurable for multiple formats, was it set for the correct one?
Is there a way to verify was it set for the correct one or not?
>
> 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?
What is the difference between these two ways? For my hardware, I
noticed that it hangs for a few seconds and gives EIO (arecord:
pcm_read:2032: read error: Input/output error).
> Does 'arecord -v' or arecord -vv' tell us anything more about the situation?



-- 
Thanks,
Sekhar