[PD] alsa and jack on ARM/Wandbaord

Chris Clepper cgclepper at gmail.com
Mon Sep 23 18:50:41 CEST 2013

Looks like it is a driver issue in the kernel preventing duplex audio with
the onboard sgtl5000.  I'm about to rebuild the kernel to test.

On Mon, Sep 23, 2013 at 2:25 AM, IOhannes m zmölnig <zmoelnig at 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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