Jack rt problems in hardy

[atuc]

hallo

i also have problems with the rt kernel on hardy and my usb m-audio
fasttrack, the standard kernel works better for me.

i found this:

http://ubuntuforums.org/showthread.php?t=781104

alex

> 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
>
>