>> install 'alsa-oss' if you haven't already got it
>> run 'aoss pd' instead of 'pd'
>> https://help.ubuntu.com/community/alsa-oss
>>
> This last one did it! Launching Pd with -oss won't work (it can't find

obviously, since "pd -oss" does the same as "pd": it tries using the
OSS-drivers.
but...

> /dev/dsp), but launching it like you suggest "aoss /usr/local/bin/pd"
> outputs audio properly.


you really should avoid using OSS (unless forced to, because your
soundcard only has OSSv4 drivers).
use
"pd -alsa" to use ALSA directly.
(the hacks mentioned in the other mail really emulate the OSS layer on
top of ALSA...)