[LAD] USB device dmesg error

[tom at trellis.ch]

Thanks for the hints, i will try to apply the patch series.
Best regards,
Thomas

> tom at trellis.ch wrote:
>> -> the "Couldn't open device" looks suspicious
>
> I guess you are not root.
>
>>         bmAttributes           37
>>           Transfer Type            Isochronous
>>           Synch Type               Asynchronous
>>           Usage Type               Implicit feedback Data
>
>>> I guess this is one of the devices that use implicit feedback
>>> synchronization, which is very buggy in the current driver.  As far as
>>> I know, only Jack works with these devices.
>>
>> Huh? How could that work with JACK if it doesn't with ALSA?
>
> Jack uses ALSA; that driver code was tested only with Jack, and
> expects the playback and capture streams to be opened at the same
> time.
>
>> Btw, this is what i get when trying to start JACK with it:
>>
>> ATTENTION: The capture device "hw:0,0" is already in use. The following
>> applications  are using your soundcard(s) so you should  check them and
>> stop them as necessary before  trying to start JACK again:
>>
>> jackd (process ID 2341)
>
> Even more bugginess.  Maybe try the other Jack.
>
> A patch series that should fix the bugs was posted on alsa-devel:
> http://mailman.alsa-project.org/pipermail/alsa-devel/2013-August/065744.html
>
>
> Regards,
> Clemens
>