[PD] Pd sometimes not outputting sound when launched on boot

Dan Wilcox danomatika at gmail.com
Thu May 17 22:28:00 CEST 2018

This is usually due to Pd starting up too quickly with -nogui and not setting up the audio in time.

I assume you're using a loading to turn on DSP in the patch, try adding a delay ala:

[delay 100]
[ pd dsp 1; <

> I have an Odroid-XU4 running Ubuntu 16.04.3 LTS and I'm running
> Pd-0.48-1 on it. I want to enclose it and use it headless so I'm
> launching Pd on boot via crontab. This is what I've written in crontab:
> @reboot sleep 30 ; pd -alsa -audiodev 3 -inchannels 2 -outchannels 4
> -nogui -open
> /home/odroid/Documents/Pd/3dPd/Pd_patches/modular_synthesizer.pd &
> Half of the times I'm booting up the Odroid, Pd won't make any sound. I
> have an LED controlled by a Teensy, which gets input from Pd when the
> DSP goes on (through [r pd] -> [route dsp]), and it indicates that the
> DSP is indeed on.
> Is there some known issue, or anyone has something in mind?

Dan Wilcox
@danomatika <http://twitter.com/danomatika>
danomatika.com <http://danomatika.com/>
robotcowboy.com <http://robotcowboy.com/>

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