I think that the problem is PulseAudio. When I try to start jack i really need to shutdoen every program using the server (pulseaudio is a kind of a server) so that jack has control over the sound card. Only after running jack and starting the server, you can open Puredata and then select in media the jack out/in and connect it in qjackctrl. I tested it with Pd vanilla, but I think it will be the same with pd-extended, since is the same audio engine.
Remember that need to close all software that uses audio, including firefox etc.....
2009/11/14 Hans-Christoph Steiner hans@at.or.at
How would we make Pd use that ALSA compatibility layer? I know about the OSS emulation in Pulseaudio, I believe that would work by doing 'padsp pd'.
.hc
On Nov 13, 2009, at 11:28 PM, John Harrison wrote:
IIRC there is some sort of ALSA compatibility layer in Pulseaudio and I think it would be nice if Pd-extended could choose this ALSA "driver" or "soft card" or whatever it would be called. That would be a better solution than pasuspender because then Pd would be playing "nice" with all the other sound apps concurrently. Latency might be slightly worse but I think for beginners at least the initial experience would be more positive, as many of these users are coming from OS X and Windows platforms where sound applications sharing the same sound card concurrently is expected behavior.
I also vaguely remember the pulseaudio is only an issue with ALSA when there is no hardware mixer in the card. But my guess is that would be all cheap sound cards, since it has been the case with the built-in cards on all the Linux-based laptops I run into.
-John
On Fri, Nov 13, 2009 at 6:50 PM, Hans-Christoph Steiner hans@at.or.atwrote:
Is pasuspender something that could be integrated into the Pd-extended menu launch item somehow? I'd really like to make sure that Pd will output audio by just starting it in Debian/Ubunut.
.hc
On Nov 12, 2009, at 12:09 PM, John Harrison wrote:
could be pulseaudio is the problem?
from the command line try
pasuspender pd
On Thu, Nov 12, 2009 at 9:28 AM, Aditya Mandayam adityams@gmail.comwrote:
hi,
i have pd installed on ubunty 9.10 - karmic koala.
i have absolutely no sound when i fire up pd. i've tried fooling around with the Media>settings for OSS, ALSA, jack, default MIDI.
No sound. What gives?
Thank you,
Y
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