Hi.<br><br>I'm going to try to expose the problems I've met during the last two month dealing with the title of my post.<br>Sorry if it's confused.<br><br>This winter, I used to work on an Ubuntu Hardy, Extended 0.41.4 and with the jackd and qjackctl from the official repository (by the way, my sound card is a firewire Presonus Firepod).<br>
I had no problem to use 4 different instances of Pd at the same time using jackd as sound server. (and I can precise I didn't need RT-kernel to do what I wanted). <br><br>I recently change for Ubuntu Lucid.<br>So I also change for Pd 0.42.5 (rc4) and the new official jackd and qjackctl.<br>
<br>If I use the kernel 2.6.32-23, I can play my patch on one instance, it's stable but the sound crunch a little bit sometimes.<br>I also can execute my patch on 4 instances, but the sound is awful and 3 minutes later, Jack quit.<br>
<br>So I've try the 2.6.31-11-rt.<br>In Pd-ext, If I change directly from ALSA to Jack, pd quit. Every time I have to change to OSS before to choice Jack and I can't save the jack configuration.<br>On one instance the sound is perfect and stable.<br>
It's possible to launch 4 instances without patch and to hear simultaneously the 4 tests tones on my sound card using jack.<br>But it's impossible to launch even 2 instances with my patch. <br>Both quit at the same time when I try to pass from OSS to Jack on the second.<br>
Console message just tell me that GUI of Pd have quited.<br><br>My patch is the one you can find on this page : <a href="http://yamatierea.org/papatchs/squareroom/OSR.htm">http://yamatierea.org/papatchs/squareroom/OSR.htm</a> <br>
Direct link for the patch : <a href="http://yamatierea.org/papatchs/squareroom/OSR.zip">http://yamatierea.org/papatchs/squareroom/OSR.zip</a><br>But be careful if you look inside... it's still a little bit fuzzy...<br>
<br>Do you think there is a way to solve my problem ?<br>--> Using my patch, simultaneously on 4 instances of Pd-extended using Jack on Ubuntu 10.04?<br><br>Thank you.<br><br>01ivier<br>