I've tried to make the Pd-extended packages work out-of-box with audio without jack. As long as no other apps are trying to play sound on Debian/Ubuntu, and they launch Pd-extended from the Applications menu, the sound should "just work".

.hc

On Jan 11, 2012, at 7:21 PM, Richie Cyngler wrote:

Hi Listers,

I'll be running an intro to Pd workshop at the Melboure Mini Maker Faire this Saturday http://makerfairemelbourne.wordpress.com/ as well as showing off some of my Arduinstruments and hacks.

I will be providing the install files to participants on usb sticks but having (shamefully) not used Linux yet I'm wondering if JACK is required with Ubuntu or Debian installs? (I have grabbed the install info page from pd.info as well.) I'd like to make sure I'm as prepared as possible assuming terrible web access.

Any advice is appreciated.

thanks

-- Richie _______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

Computer science is no more related to the computer than astronomy is related to the telescope. -Edsger Dykstra

On Thu, Jan 12, 2012 at 1:21 AM, Richie Cyngler glitchpop@gmail.com wrote:

I'm wondering if JACK is required with Ubuntu or Debian installs? (I have grabbed the install info page from pd.info as well.) I'd like to make sure I'm as prepared as possible assuming terrible web access.

When using a usb mic with Debian, Pd can not handle the different clocks for ad/da and JACK is needed to solve this. Using other audio interfaces, Pd can do without JACK.

In Debian, when I first started Pd it said 'tried but could not sync'. It helped to install gnome-alsa mixer and disable everything which is not needed, notably 'IEC 958' and 'IEC 958 Default PCM'.

Debian comes by default with ALSA and without pulseaudio. Pulseaudio is only installed when other software depends on it. Pd uses ALSA. If you start Pd from the menu or desktop icon, it first calls command pasuspender. But when pulseaudio is not installed, pasuspender is not installed either, and Pd can not be started from the menu or desktop icon until you change it's properties or start Pd from the command line.

Pd does not share 'default soundcard' with other applications but claims a soundcard for itself. If you accidentally open a second instance of Pd (which already happens when you doubleclick a patch in the file browser), that new instance can not use the same soundcard.

You see there's a couple of tricks. Without internet, Linux users are handicapped, so if you have the opportunity to inform your participants it is better when they come to the workshop with Pd installed and tested.

Katja