I've searched the forum and found couple of similar threads but none have offered a solution. (although some threads end abruptly with "yay, i fixed it" without sharing how the person fixed it :/ )

I am running 64 bit Xubuntu 13.10 on an Acer C7 chromebook (chrubuntu) and when I start Pure Data or Pd-Extended nothing happens. If I start it via the command line it gives me "Watchdog: Signaling pd..." every couple of seconds forever without starting Pure Data. I find this rather odd because I tested it on the same computer a year ago or so and it worked flawlessly. (although on a different OS installation)

Is anyone familiar with this issue?

Yop,

do you use Jack, or Pulseaudio ? Pulseaudio is maybe the origin of your problem. See http://puredata.hurleur.com/sujet-8630-ubuntu-studio-jack-pulseaudio-works-extended-doesn , maybe.

Nau

I am using the default in xubuntu (ALSA, right?), but I tried starting puredata with the jack argument (after installing and starting JACK) but I got the same results.

edit: also, suspending pulseaudio before running puredata had no effect.

Hi Johannes:
Try this, maybe it will help:
Open qjackctl. Don't start yet. Click on "Setup..." button. Click on "Options" tab. Select "Execute script on startup" and write "killall pulseaudio" into the text field. Then click on Ok and save. Start jack and then start Pd with -jack option or choose it from the menu.
I hope it works!
Kind regards.

Sumidero

Thanks but sadly, no change.

small update, if I try to run pd (and pd-extended) through terminal with "-nogui" I get the following.

ALSA input error (snd_pcm_open): Device or resource busy
ALSA output error (snd_pcm_open): Device or resource busy