I have found that jack on ARM has some issues that are only fixed in current jack2, not jack1.
So see if you can get jack2 running and report.


Hopefully this helps or is another clue.


On Mon, Sep 23, 2013 at 8:25 AM, IOhannes m zmölnig <zmoelnig@iem.at> wrote:
On 09/22/13 21:00, Chris Clepper wrote:
> I've got a Wandboard* here for some testing and I can't get Alsa to work in
> duplex.  Testing with arecord produces a soundfile and aplay plays it back.
>  But starting Pd with Alsa or jack gives the dreaded errors about the
> resource being in use.

i did some tests with the wandboard and an external USB soundcard, and i
*never* managed to get jackd running stable for "longer" (the project
required that audio would work for days and weeks without restart).
so i ended up using a complicated (compared to jack) plugin system based
on ALSA.
it turned out that the timing on the wandboard is much too imprecise for
jack (and the connected cheapo USB-soundcard did not help)

obviously this is not the problem you are facing here (as i did get full
duplex sound), but maybe this info is of some other use...

fgmasdr
IOhannes


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