Some Jack Errors

[Jaime -]

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Hi All Linux audio developers and jack users!.

I new here! I hope someone can help me with some Jack' issues.

I have compiled Jack 2  to work with a motu 828mkII from SVN with the previuos installation of FFADO. I know that the motu doesn't the best solution to linux, but seems that it's possible to works.

I have got all works ok!!! the patch to connect in and outs works perfectly but the jack server crashes in a minuts.

 here the logs:

/usr/bin/jackd -R -P20 -p128 -dfirewire -dhw:0 -r44100 -p4096 -n2

14:52:50.693 JACK was started with PID=6461.
Memory locking is unlimited - this is dangerous. Please alter the line  @audio   -  memlock    unlimitedin your /etc/limits.conf to  @audio   -  memlock    1540329
no message buffer overruns
jackd 0.116.2
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.
loading driver ..
libffado 1.999.42 built Oct 12 2009 00:14:21
14:52:52.767 Server configuration saved to "/home/waverider/.jackdrc".
14:52:52.768 Statistics reset.
14:52:52.915 Client activated.
14:52:52.918 JACK connection change.
14:52:52.920 JACK connection graph change.
firewire ERR: wait status < 0! (= -1)
DRIVER NT: could not run driver cycle
14:52:59.626 JACK connection graph change.
14:52:59.730 JACK connection change.
jack main caught signal 12
14:52:59.816 Shutdown notification.
14:52:59.817 JACK is stopping...
14:52:59.817 JACK is being forced...
no message buffer overruns
cannot continue execution of the processing graph (broken pipe)
zombified - calling shutdown handler
14:53:00.018 JACK was stopped successfully.
15:33:00.394 Post-shutdown script terminated with exit status=256.

I have tried to explain as best as possible, english isn't my language so apologies for that!

Thanks in advance!

Best regards,

James C.

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[Stéphane Letz]

Le 17 oct. 2009 à 13:34, Jaime - a écrit :

> Hi All Linux audio developers and jack users!.
>
> I new here! I hope someone can help me with some Jack' issues.
>
> I have compiled Jack 2  to work with a motu 828mkII from SVN with  
> the previuos installation of FFADO. I know that the motu doesn't the  
> best solution to linux, but seems that it's possible to works.
>
  The log files says: jackd 0.116.2, this is JACK1 not JACK2.

So??

Stéphane


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[Jonathan Woithe]

Hi James

> I have compiled Jack 2  to work with a motu 828mkII from SVN with the
> previuos installation of FFADO.

Exactly what version of FFADO is "the previous installation of FFADO"?

What distribution are you running?

I seem to recall reading somewhere that FFADO's current codebase doesn't
work reliably with jack2, but I can't remember where this was or in what
context.  In the interest of completeness it might be a good idea to try
jack1.

> I have got all works ok!!! the patch to connect in and outs works
>  perfectly but the jack server crashes in a minuts.

>  here the logs:
>
> /usr/bin/jackd -R -P20 -p128 -dfirewire -dhw:0 -r44100 -p4096 -n2

A few comments:

 1) an RT priority of 20 ("-P20") is really far too low to work on most
    systems.  Try "-P70" instead.

 2) I'm not sure why you're including "-dhw:0" as an option to the
    firewire backend.  I'd take it out for now.

 3) Use "-n3" instead of "-n2" for starters.

Try running with these three changes and see if there is any difference.

> :
> jackd 0.116.2

This is jack1 but you said previously that you compiled/installed jack2.  It
therefore seems likely that the system might have two different versions of
jack installed concurrently.  This is not supported and will lead to all
kinds of problems (the details are in previous posts to this list - check
the archives if you're interested).  You will need to resolve this.  Drop me
a private email if you need help with this.

Regards
  jonathan
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[Jaime -]

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Thank you very much for the help and your answers Jonathan,

I'm going to give you all information:

I installed Ubuntu Studio 8.04  32bits with the Hardly RT kernel 2.6.24-24-RT.

 This Distro comes with  jackd previously pre-compiled and installed but without ffado support i know.

Actually... the version of FFADO i am using is libffado 1.999.42 built Oct 12 2009 downloaded from svn and compiled. I've read somewhere that it is necessary to re-compile jack to the ffado support.
It's possible that i compiled jack without the desinstallation of the previously jack but also read somewhere that isn't necessary to works fine.

 So i downloaded jack from svn branch stable version and its possible that i said version2 but it was 0.116.2 really. I remember reading this is the correct version to works with motu 828 mkii firewire.

I followed the instructions of http://subversion.ffado.org but this website seems that it is not working today.

I have tried : /usr/bin/jackd -R -P70 -p128 -dfirewire -r44100 -p4096 -n3  with the same errors.

could you help me to check the files for that possible cause of incompatibililty from previously version of jack?

Any other ocurrency?

I like people that help selflessly!! thank you again!,

James

> From: jwoithe@...
> Subject: Re: [Jack-Devel] Some Jack Errors
> To: unoquebaila@...
> Date: Sat, 17 Oct 2009 22:59:34 +0930
> CC: jack-devel@...
>
> Hi James
>
> > I have compiled Jack 2 to work with a motu 828mkII from SVN with the
> > previuos installation of FFADO.
>
> Exactly what version of FFADO is "the previous installation of FFADO"?
>
> What distribution are you running?
>
> I seem to recall reading somewhere that FFADO's current codebase doesn't
> work reliably with jack2, but I can't remember where this was or in what
> context. In the interest of completeness it might be a good idea to try
> jack1.
>
> > I have got all works ok!!! the patch to connect in and outs works
> > perfectly but the jack server crashes in a minuts.
>
> > here the logs:
> >
> > /usr/bin/jackd -R -P20 -p128 -dfirewire -dhw:0 -r44100 -p4096 -n2
>
> A few comments:
>
> 1) an RT priority of 20 ("-P20") is really far too low to work on most
> systems. Try "-P70" instead.
>
> 2) I'm not sure why you're including "-dhw:0" as an option to the
> firewire backend. I'd take it out for now.
>
> 3) Use "-n3" instead of "-n2" for starters.
>
> Try running with these three changes and see if there is any difference.
>
> > :
> > jackd 0.116.2
>
> This is jack1 but you said previously that you compiled/installed jack2. It
> therefore seems likely that the system might have two different versions of
> jack installed concurrently. This is not supported and will lead to all
> kinds of problems (the details are in previous posts to this list - check
> the archives if you're interested). You will need to resolve this. Drop me
> a private email if you need help with this.
>
> Regards
> jonathan

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[Jonathan Woithe]

Hi James

Judging from what you've said so far it seems that the problem is most
likely one of configuring your system for FFADO rather than it being a JACK
problem per se.  I'll therefore respond off-list for the moment to avoid
cluttering the jack list with FFADO-specific details.

Regards
  jonathan
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