[linux-audio-user] Pd produces many Xruns

Hector Centeno hcengar at gmail.com
Sun Dec 17 22:19:23 EST 2006

Hi Chris,

The way to avoid this is to run PD with the -rt flag so it runs in
realtime. If you are still getting the xruns then you can try
increasing PD's priority using:

chrt -f -p 50 `pidof "pd"`

50 is the priority that works for me, but you might have to experiment
with different numbers.

I hope this information helps (I'm using Ubuntu Edgy too).


On 12/17/06, chris beagles <christhemonkey at gmail.com> wrote:
> Evening list,
> Today i tryed playing around with pd for the first time, and enabled
> the audio system to use jack, which works fine except for:
> If I move the mouse and it crosses the boundary between two windows, I
> then get reports of Xruns from within pd in the main window and the
> sound crackles accordingly.
> Qjackctl does not report any of these xruns.
> This is getting a little annoying and may leave me having to leave pd
> for now as i need to utilise my mouse whilst using it.
> I am running Ubuntu Edgy with a 2.6.17-rt kernel and jack as realtime.
> If I do not enable the audio system within pd then this problem does not occur.
> Any help much appreciated.
> Chris

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