Jack rt problems in hardy

[Fabien Juchniewicz]

Is there a line like the one below in your /etc/security/limits.conf ?

            @audio 		 -	 memlock  	XXXXXXXXXX

/Fabien



Le mardi 13 mai 2008 à 11:14 +0200, rob free a écrit :

> Hi everyone,
> I'm having lots of trouble running jack (from jackQtl) in ubuntu studio
> 8.04 . I am using a USB sound card : Alesis io2 and Jack Xruns like
> crazy on all settings! I get some error messages at start up :
> 
> 
> 
> 11:01:39.739 Startup script terminated with exit status=256.
> 
> 11:01:39.740 JACK is starting...
> 
> 11:01:39.740 /usr/bin/jackd -R -P70 -dalsa -dhw:1 -r48000 -p128 -n3 -D
> -Chw:1 -i2 -o2
> 
> 11:01:39.744 JACK was started with PID=7429.
> 
> jackd 0.109.2
> 
> 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.
> 
> cannot lock down memory for jackd (Cannot allocate memory)
> 
> loading driver ..
> 
> apparent rate = 48000
> 
> creating alsa driver ... hw:1|hw:1|128|3|48000|2|2|nomon|swmeter|-|32bit
> 
> control device hw:1
> 
> configuring for 48000Hz, period = 128 frames (2.7 ms), buffer = 3
> periods
> 
> ALSA: final selected sample format for capture: 24bit little-endian
> 
> ALSA: use 3 periods for capture
> 
> ALSA: final selected sample format for playback: 24bit little-endian
> 
> ALSA: use 3 periods for playback
> 
> JACK: unable to mlock() port buffers: Cannot allocate memory
> 
> JACK: unable to mlock() port buffers: Cannot allocate memory
> 
> 11:01:41.796 Server configuration saved to "/home/rob/.jackdrc".
> 
> 11:01:41.797 Statistics reset.
> 
> 11:01:41.799 Client activated.
> 
> 11:01:41.800 JACK connection change.
> 
> 11:01:41.804 JACK connection graph change.
> 
> cannot lock down memory for RT thread (Cannot allocate memory)
> 
> 11:01:56.259 XRUN callback (1).
> 
> 
> 
> Does anyone know why jack cannot allocate memory? Any suggestions?
> Thanks for your time!
> Robin
> 
> 
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