Re: status of usb audio driver

[Takashi Iwai <tiwai@suse.de>]

At Wed, 12 Jun 2002 14:16:13 +0900,
Patrick Shirkey wrote:
> 
> Takashi Iwai wrote:
> > 
> > most of debug messages have been moved to snd_printdd().  that is,
> > to show such debug messages, you'll need to configure alsa-driver with
> > --with-debug=detect.  if your usb device doesn't work try this, and
> > send me the output of kernel messages together with the output of
> > lsusb.
> > 
> 
> Using the latest code this is all the info I can get for this card.
> 
> To refresh your memory.
> 
> It appears that the card is being correctly found and registered but 
> that alsa cannot set up the pcm devices.
> 
> There are two obvious things that are possibly directly related. One is 
> that the card is created in /proc/asound three times and the other is 
> the  AS_GENERAL descriptor not found error.

it seems that this device has discontinuous alternate setting
numbers.  the bAlternateSetting jumps from 0 to 4 or 3, while usual
devices have the suceeding numbers from 0.

> 
> 
> ----
> #cat: /proc/asound/dev/controlC2: File descriptor in bad state

that's not wrong.  your device has apparently no mixer controls...

together with the problem above, i fixed / improved the usb audio
driver.
now all interfaces on the same usb device will be merged into one
card, so you'll get only one card now.

it's on cvs.  please give a try.
btw, now descriptor proc was removed (one can use lsusb anyway).
instead you'll see formats supported on each stream.


Takashi

_______________________________________________________________

Sponsored by:
ThinkGeek at http://www.ThinkGeek.com/