jackd refuses to start

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jackd refuses to start

Alexandre Prokoudine
Hi,

I got this report from a qjackctl user with some Celeron 500:

18:18:41.657 Patchbay deactivated.
18:18:41.798 Statistics reset.
18:18:41.962 Startup script...
18:18:41.963 artsshell -q terminate
18:18:42.093 MIDI connection graph change.
18:18:42.577 Startup script terminated with exit status=256.
18:18:42.579 JACK is starting...
18:18:42.580 jackd-realtime -R -P1 -dalsa -dhw:0 -r44100 -p4096 -n9 -D
-Chw:0,0 -i2 -o2
18:18:42.588 Could not start JACK. Sorry.
18:18:44.345 JACK was stopped successfully.
18:18:44.557 MIDI connection change.
18:18:57.859 Startup script...
18:18:57.859 artsshell -q terminate
18:18:58.395 Startup script terminated with exit status=256.
18:18:58.396 JACK is starting...
18:18:58.397 /usr/bin/jackd -R -P1 -dalsa -dhw:0 -r44100 -p4096 -n9 -D
-Chw:0,0 -i2 -o2
18:18:58.406 JACK was started with PID=3755 (0xea.
jackd 0.99.54
Copyright 2001-2005 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
JACK compiled with System V SHM support.
loading driver ..
apparent rate = 44100
creating alsa driver ... hw:0|hw:0,0|4096|9|44100|2|2|nomon|swmeter|-|32bit
control device hw:0
configuring for 44100Hz, period = 4096 frames, buffer = 9 periods
Note: audio device hw:0,0 doesn't support a 32bit sample format so
JACK will try a 24bit format instead
Note: audio device hw:0,0 doesn't support a 24bit sample format so
JACK will try a 16bit format instead
ALSA: got smaller periods 2 than 9 for capture
ALSA: cannot configure capture channel
cannot load driver module alsa
18:19:01.156 Could not connect to JACK server as client.
could not attach as JACK client (server has exited)
18:19:01.388 JACK was stopped successfully.
18:19:35.705 Startup script...
18:19:35.714 artsshell -q terminate
18:19:36.289 Startup script terminated with exit status=256.
18:19:36.295 JACK is starting...
18:19:36.299 /usr/bin/jackd -R -P1 -dalsa -r44100 -p4096 -n4 -D
-Chw:0,0 -Phw:0,0 -i2 -o2
18:19:36.329 JACK was started with PID=3759 (0xeaf).
jackd 0.99.54
Copyright 2001-2005 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
JACK compiled with System V SHM support.
loading driver ..
apparent rate = 44100
creating alsa driver ... hw:0,0|hw:0,0|4096|4|44100|2|2|nomon|swmeter|-|32bit
control device hw:0
configuring for 44100Hz, period = 4096 frames, buffer = 4 periods
Note: audio device hw:0,0 doesn't support a 32bit sample format so
JACK will try a 24bit format instead
Note: audio device hw:0,0 doesn't support a 24bit sample format so
JACK will try a 16bit format instead
ALSA: got smaller periods 2 than 4 for capture
ALSA: cannot configure capture channel
cannot load driver module alsa
18:19:39.076 Could not connect to JACK server as client.
could not attach as JACK client (server has exited)
18:19:39.283 JACK was stopped successfully.
18:19:53.738 Startup script...
18:19:53.743 artsshell -q terminate
18:19:54.336 Startup script terminated with exit status=256.
18:19:54.342 JACK is starting...
18:19:54.346 /usr/bin/jackd -R -P1 -dalsa -r48000 -p4096 -n4 -D
-Chw:0,0 -Phw:0,0 -i2 -o2
18:19:54.377 JACK was started with PID=3763 (0xeb3).
jackd 0.99.54
Copyright 2001-2005 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
JACK compiled with System V SHM support.
loading driver ..
apparent rate = 48000
creating alsa driver ... hw:0,0|hw:0,0|4096|4|48000|2|2|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 4096 frames, buffer = 4 periods
Note: audio device hw:0,0 doesn't support a 32bit sample format so
JACK will try a 24bit format instead
Note: audio device hw:0,0 doesn't support a 24bit sample format so
JACK will try a 16bit format instead
ALSA: got smaller periods 2 than 4 for capture
ALSA: cannot configure capture channel
cannot load driver module alsa
18:19:58.023 Could not connect to JACK server as client.
could not attach as JACK client (server has exited)
18:19:58.229 JACK was stopped successfully.
18:20:13.712 Startup script...
18:20:13.717 artsshell -q terminate

Any ideas?

Alexandre


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Re: jackd refuses to start

Rui Nuno Capela

> Hi,
>
> I got this report from a qjackctl user with some Celeron 500:
>
[...]
> 18:18:58.397 /usr/bin/jackd -R -P1 -dalsa -dhw:0 -r44100 -p4096 -n9 -D
> -Chw:0,0 -i2 -o2
[...]
> ALSA: got smaller periods 2 than 9 for capture
> ALSA: cannot configure capture channel
> cannot load driver module alsa
[...]
>
> Any ideas?
>

Try "Playback only" mode (-P) or change the capture device (-Chw:0,0) to
something else. It seems to complain that the number of periods (-n9)
cannot be that large, at least for capture. I would retry the default
(-n2).

Bye now.
--
rncbc aka Rui Nuno Capela
[hidden email]



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SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_______________________________________________
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