FW: Re: [PlanetCCRMA] Jack: Cannot get realtime capabilities

[Mike Jewell]

Thanks for the tip, Fernando.  Works great.  If I had just used jackd like I 
had been doing all along, I would not have even know that jackstart doesn't 
work.

Can you can explain why there is even a "jackstart" command if it is doing 
the same thing as "jackd -R"?

Thanks again for your help and for the great Planet CCRMA site/apps.  It's 
been a lifesaver for me the last year.

Mike
Mike Jewell



>From: Fernando Lopez-Lezcano <nando at ccrma.Stanford.EDU>
>To: Mike Jewell <msjmsj49 at hotmail.com>
>CC: planetccrma at ccrma.Stanford.EDU
>Subject: Re: [PlanetCCRMA] Jack: Cannot get realtime capabilities
>Date: 09 May 2005 17:35:14 -0700
>
>On Mon, 2005-05-09 at 17:05, Mike Jewell wrote:
> > Fedora Core 3
> > Pentium 4
> > Kernel: 2.6.10-2.1.ll.rhfc3.ccrmasmp
> >
> > Hi CCRMA listers,
> >
> > This is my first post here.  I've been using the Planet for a year now 
>with
> > Fedora Core 1 and I recently upgraded to Core 3 largely so I could get 
>the
> > realtime Linux Security Module.  But when I run Jack it still complains 
>that
> > it can't get this.  (See output below)
>
>Under 2.6.x it will complain but will work anyway...
>
> > Is this something I still need to "enable" in some way even though the
> > Planet web site says this kernel has it included?
>
>Under 2.6.x just use "jackd" directly instead of "jackstart".
>-- Fernando
>
> > Thanks in advance for any help you can offer this relative newbe trying 
>to
> > "do" Linux.
> >
> > Mike
> > Mike Jewell
> >
> >
> >
> > $  jackstart -R -d alsa -d hw -r 44100
> > jackstart: cannot get realtime capabilities, current capabilities are:
> >            =ep cap_setpcap-ep
> >     probably running under a kernel with capabilities disabled,
> >     a suitable kernel would have printed something like "=eip"
> >
> > back from read, ret = 1 errno == Success
> > jackstart: could not give capabilities: Operation not permitted
> > jackd 0.99.36
> > 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
> >
> > JACK compiled with System V SHM support.
> > loading driver ..
> > apparent rate = 44100
> > creating alsa driver ... hw|hw|1024|2|44100|0|0|nomon|swmeter|-|32bit
> > configuring for 44100Hz, period = 1024 frames, buffer = 2 periods
> > nperiods = 2 for capture
> > nperiods = 2 for playback
> >
> >
> > _______________________________________________
> > PlanetCCRMA mailing list
> > PlanetCCRMA at ccrma.stanford.edu
> > http://ccrma-mail.stanford.edu/mailman/listinfo/planetccrma
>
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