[alsa-devel] usbaudio: Support for USB audio v2.0 devices

Daniel Mack daniel at caiaq.de
Thu May 27 20:21:00 CEST 2010

On Tue, May 18, 2010 at 10:07:57AM +0300, adelias wrote:
> On 4/5/2010 1:48 μμ, Daniel Mack wrote:
> >On Mon, May 03, 2010 at 03:49:05PM +0300, adelias wrote:
> >>On 27/4/2010 5:06 μμ, Daniel Mack wrote:
> >>>What specific configuration are you testing with? As you have such an
> >>>evaluation kit, I believe you're also provided with the XMOS development
> >>>platform - which firmware did you install to the board?
> >>>
> >>>Daniel
> >>
> >>Firmware is on 1v2. I'm not getting clicks on OSX 10.6.2 or Windows
> >>7 with the ASIO driver.
> >
> >Well, at least for OS X 10.6.2, there are problems in the class driver.
> >Do some long-time measurements with inputs and outputs to meet them.
> >
> >I would also suggest to try a newer firmware, 1v2 is rather old. If you
> >still happen to have problems, let me know and I'll have another look.
> >
> >Ironically, things don't work for me anymore currently with the Linux
> >master git + sound-2.6. I'm getting XActErrors all over the place, but
> >that's most probably not related to the driver itself but some
> >regression in the Linux USB stack I believe. Could you try that as well?
> >
> >Thanks,
> >Daniel
> >
> After upgrading XMOS firmware to 1v5, although the board is
> recognized, it no longer functions with alsa. Also needs to be reset
> before it is
> recognized in Windows.

I fixed this problem now - see my latest email to Takashi. The patch
will likely be merged in a few days, but you could also give it a try by
applying it manually (see below).

And I would still appreciate some testing feedback :)


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