On Sat, Jun 12, 2021 at 5:16 AM Valdis Klētnieks <valdis.kletnieks@xxxxxx> 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 whether it is set for the correct one or not? > > Does wireshark or other USB snoop program show any traffic at all? usbmon log during arecord is attached to this email. > 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? $ arecord -vv --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 Hardware PCM card 1 'BT_002' device 0 subdevice 0 Its setup is: stream : CAPTURE access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 1 rate : 32000 exact rate : 32000 (32000/1) msbits : 16 buffer_size : 16000 period_size : 4000 period_time : 125000 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 4000 period_event : 0 start_threshold : 1 stop_threshold : 16000 silence_threshold: 0 silence_size : 0 boundary : 9007199254740992000 appl_ptr : 0 hw_ptr : 0 arecord: pcm_read:2032: read error: Input/output error -- Thanks, Sekhar
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