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

adelias adelias at freemail.gr
Tue May 18 10:32:12 CEST 2010

On 18/5/2010 10:40 πμ, Daniel Mack wrote:
> 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.
> Jup. I believe this is a firmware bug though, but I need to investigate
> again. Just to make sure you're seeing the same kind of error, could you
> send me your dmesg output that is produced when the device is plugged
> in?
> Thanks,
> Daniel

Sorry but I have already downgraded the firmware to 1v45 and will be 
testing with it this afternoon. Might there be anything of value in 

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