[linux-audio-user] USB Audio Problems

[Mark Williams (MWP)]

> Mark Williams (MWP) wrote:
> > USB support -> USB Audio support = off
> > Sound -> ALSA -> ALSA USB devices -> USB Audio/MIDI driver = on
> >
> > On plugging in the device, dmesg says:
> > hub 1-0:1.0: new USB device on port 2, assigned address 2
> > drivers/usb/input/hid-core.c: ctrl urb status -75 received
> > usb 1-2: control timeout on ep0out
> >
> > cat /proc/asound/cards:
> > 0 [default        ]: USB-Audio - USB Audio CODEC
> >                      Burr-Brown from TI               USB Audio CODEC  at usb-0000:00:04.2-2
> >
> > Any other info that would help?
> 
> contents of oproc/asound/card0/stream0

Burr-Brown from TI               USB Audio CODEC  at usb-0000:00:04.2-1 : USB Audio

Playback:
  Status: Stop
  Interface 1
    Altset 1
    Format: S16_LE
    Channels: 2
    Endpoint: 2 OUT (ADAPTIVE)
    Rates: 32000, 44100, 48000
  Interface 1
    Altset 2
    Format: S16_LE
    Channels: 1
    Endpoint: 2 OUT (ADAPTIVE)
    Rates: 32000, 44100, 48000
  Interface 1
    Altset 3
    Format: S8
    Channels: 2
    Endpoint: 2 OUT (ADAPTIVE)
    Rates: 32000, 44100, 48000
  Interface 1
    Altset 4
    Format: S8
    Channels: 1
    Endpoint: 2 OUT (ADAPTIVE)
    Rates: 32000, 44100, 48000
  Interface 1
    Altset 5
    Format: U8
    Channels: 2
    Endpoint: 2 OUT (ADAPTIVE)
    Rates: 32000, 44100, 48000
  Interface 1
    Altset 6
    Format: U8
    Channels: 1
    Endpoint: 2 OUT (ADAPTIVE)
    Rates: 32000, 44100, 48000

Capture:
  Status: Stop
  Interface 2
    Altset 1
    Format: S16_LE
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 48000
  Interface 2
    Altset 2
    Format: S16_LE
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 48000
  Interface 2
    Altset 3
    Format: S16_LE
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 44100
  Interface 2
    Altset 4
    Format: S16_LE
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 44100
  Interface 2
    Altset 5
    Format: S16_LE
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 32000
  Interface 2
    Altset 6
    Format: S16_LE
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 32000
  Interface 2
    Altset 7
    Format: S16_LE
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 22050
  Interface 2
    Altset 8
    Format: S16_LE
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 22050
  Interface 2
    Altset 9
    Format: S16_LE
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 16000
  Interface 2
    Altset 10
    Format: S16_LE
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 16000
  Interface 2
    Altset 11
    Format: S8
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 16000
  Interface 2
    Altset 12
    Format: S8
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 16000
  Interface 2
    Altset 13
    Format: S8
    Channels: 2
    Endpoint: 4 IN (ASYNC)
    Rates: 8000
  Interface 2
    Altset 14
    Format: S8
    Channels: 1
    Endpoint: 4 IN (ASYNC)
    Rates: 8000
  Interface 2
    Altset 15
    Format: S16_LE
    Channels: 2
    Endpoint: 4 IN (SYNC)
    Rates: 11025
  Interface 2
    Altset 16
    Format: S16_LE
    Channels: 1
    Endpoint: 4 IN (SYNC)
    Rates: 11025
  Interface 2
    Altset 17
    Format: S8
    Channels: 2
    Endpoint: 4 IN (SYNC)
    Rates: 11025
  Interface 2
    Altset 18
    Format: S8
    Channels: 1
    Endpoint: 4 IN (SYNC)
    Rates: 11025

> What happens when you run "aplay something.wav"? Anything new from
> dmesg?

On running aplay, dmesg lists "usb 1-1: control timeout on ep0in", and thats it.
alsamixer also locks hard (kill -9 doesnt work).
The only way to recover is pull the USB cable, at which point alsamixer/aplay returns to bash.

BTW, if the USB "soundcard" is plugged in on boot, booting fails (not sure where yet).

Should i be asking about this on the linux-usb-devel mailinglist?

Thanks.