[PD] audio input does not work

Yvan Vander Sanden yvan at youngmusic.org
Mon Jul 4 23:15:12 CEST 2005


hi,

I have just upgraded my system to fedora core 4, installed pd etc., but my sound
input is not working.

dac~ gives output, for example when I connect an osc~ to it. adc~ has no input,
however. I've checked the alsa mixer, and the microphone is on. (direct output
works, and other applications like skype are working too.)

I have configured pd (version 0.38.4) with --enable-alsa and --enable-jack. The
jack server is started with:

-----
[root at laptop ~]# jackd -d alsa -d hw:0
jackd 0.99.0
Copyright 2001-2003 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

loading driver ..
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 1024 frames, buffer = 2 periods
Couldn't open hw:0 for 32bit samples trying 24bit instead
Couldn't open hw:0 for 24bit samples trying 16bit instead
-----

that should be ok, i have a 16bit soundcard in my laptop.
After that, i start pd -jack:

-----
 pd -jack
priority 8 scheduling enabled.
memory locking enabled.
priority 6 scheduling enabled.
memory locking enabled.
Configuring for UNIX
Pd version 0.38.4 devel {OSS 2} {ALSA 1} {jack 5} courier
-----

no errors here. The pd window gives me the output:

Opened Alsa Client 128 in:1 out:1

Computing audio gives no error, except jack sometimes outputs the following
message:

**** alsa_pcm: xrun of at least 9.553 msecs

But i don't get any input. Tried to connect adc~ to dac~, and also tried to
connect adc~ with fiddle to see some output, but nothing is coming in...

dmesg gives no errors either. I don't really know where to look now. I tried
some older versions of pd, with the same result. Has anyone here encountered
the same problems?

regards,

yvan vander sanden


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