I don't use ubuntu either, but out of curiosity, what happens if you run:

sudo su -

??

Matt

Date: Tue, 01 Jul 2008 00:32:12 +0200 From: Derek Holzer derek@umatic.nl Subject: Re: [PD] pd clicking with jack/linux To: patrick puredata@11h11.com Cc: pure data pd-list@iem.at Message-ID: 48695EEC.7070200@umatic.nl Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I run PD as root (not sudo, but real root) for click-free operation. But Ubuntu has this weird thing where you can't be root, you can only sudo. Very strange... anyways, worth a try.

I also use fluxbox with very little else going on in the GUI. Spent almost a year tuning Linux to get really optimum performance for live gigs and recording situations, really the idea is that less is more. Ubuntu/Red Hat/SuSE etc just have too many processes (especially graphical ones that cause interruptions) running at once, IMHO.

best, D.

patrick wrote:

...

hi,

i don't use pd-extended, but i think it's almost the same. the only option missing is: -nosleep (useful for dual-core).

so be sure in qjackctl - setup: Realtime Periods/Buffer: 2 Sample Rate: 44100 (or more) Frames/Period: 256 (i am running at 64 without glitches)

then for pd: pd -rt -jack -r 44100 -nosleep -audiobuf 256 -channels 16 -alsamidi -mididev 1 etc...

and finally, be sure to edit /etc/security/limits.conf: @audio - rtprio 99 @audio - memlock unlimited @audio - nice -20

and of course, add yourself to audio group (reboot to be sure). let us know.

ah yes, a long time ago i was using icewm, because gnome was causing glitches in pd. but now it seems ok here.

pat

Atte Andr? Jensen wrote:

...

Hi

I get clicks and "DIO errors" at random intervals under linux/ubuntu with jack (no xruns). I have a 17ms latency setup with jack and a realtime patched kernel and the rest of my audio setup works great with jack.

I installed pd from Pd-0.40.3-extended-20080628-ubuntu-gutsy-i386.deb

Any one else running a similar pd with a similar setup and either have it working or experience the same problems?

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