scolley wrote: 
> Great catch. Thank you. :)
> 
> Unfortunately it changes nothing.
> 
> The USB hub I used is the same one that I insert between the DragonFly
> and the iPhone to get them to work together (for those of you familiar
> with THAT little problem). Did not mention that previously. But it was a
> good idea. Too bad it did not work. Thanks.

According to this:
http://www.thewelltemperedcomputer.com/HW/USB_DAC_AsyncSlow.htm, the
dragonfly is a class 1 async dac.  So it will need a hub to work on an
imx6 (assuming the cubox does not put a hub between the processor and
the usb ports anyway?)

The problem you describe sounds like the feedback mechanism not working
- you can diagnose this by looking at /proc/asound/<card>/stream0 while
it is running and checking that the Momentary freq is changing while
playing (it should vary on repeated cats of that file around the nominal
frequency).  If this is not happening then there is something wrong with
the way the asych mechanism is working.


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