[LAU] recommendations for usb sound card?

[hollunder at gmx.at]

On Sun, 16 Mar 2008 14:15:43 -0400
Bill Allen <lau at ballen.fastmail.fm> wrote:

> Bill Allen wrote:
> >  I've got the Edirol UA20 and I am happy with it as an audio device 
> > (only 44.1 however), or as a midi device, but not both, sadly. If I 
> > run it in "Advanced" mode, jack won't start up, but it shows up as
> > a midi device. If I run it with "Advanced" driver off, I can use it
> > as a midi device, but jack won't start up.
> >
> > I've attached the lsusb -v for the device in advanced off and
> > advanced on modes. I'm not an expert, but in advanced off mode the
> > lsusb has several lines that indicate an audio streaming device,
> > where in advanced on it doesn't.
> >
> > Regards,
> > Bill
> After doing some googling, I see that this has been discussed on this 
> list before. It seems that Clemens put a fix in for it. I would
> assume that any recent alsa has gotten that fix (usbquirks.h). I've
> tried this on two very recent distros (Ubuntu rt and dyne:bolic) and
> it exhibits the same problem. Maybe I've got a defective device. Is
> there anything that I can check to verify that my distros have the
> fix in them?
> 
> Regards,
> Bill

I can't tell you how to verify anything, but the interface works
perfectly well with ubuntu (studio) gutsy and hardy as well. I also
tested it with musix, dyne:bolic and pure:dyne. The dynes require that
you type 'modprobe snd-usb-audio' afair.
I had some kind of problem with dyne:bolic but can't remember what it
was.

I really don't know what the problem could be.
I usually run this card at advanced and 48kHz, sound and midi works
fine.

I think my current standard parameters for jack are something like that:
/usr/bin/jackd -R -P70 -p128 -dalsa -dhw:1 -r48000 -p1024 -n3 -Xseq

This line is on gutsy with jack 0.109, I'd try it without -Xseq on
plain gutsy.


Best,
	Philipp