Hans-Christoph Steiner wrote:

So I have a Debian/stable box for a sound installation and I want to run pd with -nogui on it. But it is acting insane. Basically, when I run Pd with a GUI, everything works fine. When I add -nogui, pd can't read/write the audio devices. I've tried:

• ALSA and OSS
• root and other users
• Pd-extended 0.41.4 and 0.42.5 and Pd-vanilla 0.41.4

Here's what I get with OSS: pd@arg:~$ pd -nogui /tmp/test.pd /dev/dsp (read/write): Device or resource busy (now will try write-only...) /dev/dsp (writeonly): Device or resource busy /dev/dsp (readonly): Device or resource busy audio I/O stuck... closing audio

Here's what I get with ALSA: pd@arg:~$ pd -alsa -nogui /tmp/test.pd snd_pcm_open (input): Device or resource busy snd_pcm_open (output): Device or resource busy

Any ideas?

I have no trouble here on debian stable using the jack output. Do you have more than one sound card? I think you need to specify the sound card on the command line, because otherwise it tries the first card it finds and fails if it cannot open that one.

On the subject: pd does not auto-connect in for me because it always tries to connect to my midi controller instead of the sound card. I am happy with this because I prefer to connect manually anyway, but I guess it is worth checking out if you want autoconnecting to happen. There is a check in the jack API IIRC to test whether a given physical device accepts sound input (jack can handle midi also).