[PlanetCCRMA] Re: JACK configuration

[Fernando Lopez-Lezcano]

On Sat, 2005-04-09 at 14:04, Bob Bailey wrote:
> Thanks.  Actually I am using the 2.6 kernels.  I had the same problem
> in both the latest stable release and a couple of the edge kernels. 
> The issue seems to be related to the realtime patch.  I can start
> jackd, but not jackd-realtime (JACK Connection Kit gives 3 options in
> 'Server Path').

On fc2/fc3 (2.6.x based) you need to start "jackd", on fc1/rh9 you want
to use "jackstart". I don't know why qjackctl also shows jackd-realtime
(it does not exist in a regular install of jack) as an option, maybe
that's for a different distribution?

> How can I check to see that I have the realtime module loaded at boot
> and running?  I did find the following information when I checked
> 'serviceconf':
> 
> Realtime kernel module is loaded, current parameters are:
> any=1; gid=-1; mlock=1

That means it's there. Or in a terminal do:
  /etc/rc.d/init.d/rtload status

I don't know why or when the message indicating that jack was running
realtime was dropped. I know that if you specify "-R" and it does not
complain then it is (probably?) running realtime. 

-- Fernando

> On Sat, 2005-04-09 at 08:24, R Parker wrote: 
> > --- Bob Bailey <bob@digisonus.com> wrote:
> > > Mark,
> > > 
> > > I had enabled the alsa sound start up script with
> > > '/sbin/chkconfig
> > > alsasound on' 
> > > 
> > > cat /proc/asound/version:
> > > 
> > > Advanced Linux Sound Architecture Driver Version
> > > 1.0.9rc1.
> > > Compiled on Mar 22 2005 for kernel
> > > 2.6.10-2.1.11.rhfc2.ccrma.
> > > 
> > > cat /proc/asound/cards:
> > > 
> > > 0 [M410        ]: ICE1712 - M Audio Delta 410
> > >                        M Audio Delta 410 at 0xd000,
> > > irq 10
> > > 
> > > Starting JACK from the terminal worked using 'jackd
> > > -d alsa -d hw'. 
> > > When I look into the settings for qjackctl it is
> > > using 'jackd-realtime'
> > > as the Server Path.  Could that be why it couldn't
> > > find the JACK server
> > > even though I have the the Realtime kernel module
> > > loaded?
> > 
> > All apps must be started by the same user. I assume
> > this is a 2.4 kernel. If correct, use jackstart and
> > start qjackctl with your normal user account and
> > follow suit for all other applications.
> > 
> > ron
> > 
> > > RESULT:
> > > 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 ..
> > > creating alsa driver ...
> > > hw|hw|1024|2|48000|0|0|nomon|swmeter|-|32bit
> > > configuring for 48000Hz, period - 1024 frames,
> > > buffer - 2 periods
> > > nperiods - 2 for capture
> > > nperiods - 2 for playback
> > > 
> > > MusE started fine.  Now I'll reboot and try this
> > > with an Edge kernel. 
> > > I'm trying to get a system to the point that a non
> > > technical user can
> > > use it, preferably with no need to use command lines
> > > (ie. system used
> > > only as DAW, boots into realtime kernel, alsa
> > > started and running
> > > indefinitely, JACK control Kit configured with
> > > pre-patch for sound card,
> > > apps pre-configed, etc..)  
> > > 
> > > If you see anything else... it is much appreciated. 
> > > 
> > > 
> > > Bob
> > > -- 
> > > 
> > > digi|SONUS
> > > p:: 877.769.3173
> > > e:: info@digisonus.com
> > > 
> > > 
> > > On Fri, 2005-04-08 at 21:51, Mark Knecht wrote:
> > > 
> > > > Bob,
> > > >    Is Alsa running? cat /proc/asound/version   and
> > >   cat /proc/asound/cards
> > > > 
> > > >    Try a couple of simple things first:
> > > > 
> > > > (as a user)
> > > > jackd -d alsa -d hw
> > > > 
> > > > Does it work?
> > > > 
> > > > If it does then man jackd and look at the options.
> > > If it doesn't we'll
> > > > look at why.
> > > > 
> > > > Interesting options (from memory...)
> > > > 
> > > > jackd -R -d alsa -r 44100 -n 2 -p 256 -d hw
> > > > 
> > > > [mark@Godzilla mark]$ jackd -R -d alsa -r 44100 -n
> > > 2 -p 256 -d hw
> > > > 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|256|2|44100|0|0|nomon|swmeter|-|32bit
> > > > configuring for 44100Hz, period = 256 frames,
> > > buffer = 2 periods
> > > > nperiods = 2 for capture
> > > > nperiods = 2 for playback
> > > > 
> > > > 
> > > > Interesting. I'm not seeing realtime getting
> > > enabled. PlanetEdge kernel.
> > > > 
> > > > Anyway, give it a try.
> > > > 
> > > > Cheers,
> > > > Mark
> > > 
> > > 
> > > 
> > 
> > 
> > 		
> > __________________________________ 
> > Do you Yahoo!? 
> > Make Yahoo! your home page 
> > http://www.yahoo.com/r/hs
> 
> 
> 
> -- 
> digi|SONUS
> 1018 4th ave., ste. 306
> oakland, ca 94606
> p:: 877.769.3173
> e:: info@digisonus.com