[linux-audio-user] [JACK Fwd: strange-difficult to explain BUG]

André Alves Pereira andre.pereira at ig.com.br
Fri Dec 24 07:53:50 EST 2004


Em Sex 24 Dez 2004 00:21, Russell Hanaghan escreveu:

> Shouldn't need to use jackstart if using realtime-lsm. Just run jackd as
> user.
>
> R~

Doesn't work:

$ /usr/bin/jackd -R -dalsa -dhw:0 -r48000 -p128 -n2
jackd 0.99.13
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
cannot lock down memory for jackd (Operation not permitted)
loading driver ..
apparent rate = 48000
creating alsa driver ... hw:0|hw:0|128|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 128 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
nperiods = 2 for capture
Couldn't open hw:0 for 32bit samples trying 24bit instead
Couldn't open hw:0 for 24bit samples trying 16bit instead
nperiods = 2 for playback
JACK: unable to mlock() port buffers: Operation not permitted
jack_create_thread: error -1 switching current thread to rt for inheritance: 
Unknown error 4294967295
cannot start watchdog thread
cannot load driver module alsa
10:48:55.363 JACK was stopped successfully.

With jackstart work fine...

$ /usr/bin/jackstart -R -dalsa -dhw:0 -r48000 -p128 -n2
jackd 0.99.13
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 ..
apparent rate = 48000
creating alsa driver ... hw:0|hw:0|128|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 128 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
nperiods = 2 for capture
Couldn't open hw:0 for 32bit samples trying 24bit instead
Couldn't open hw:0 for 24bit samples trying 16bit instead
nperiods = 2 for playback

André Magoo




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