[PlanetCCRMA] Question about jack. Possibly a question for Fernando
bill_- at hotmail.com
Sun Aug 15 08:40:42 PDT 2010
Hello everyone. I have been having some great fun with the low latencies using qjackctl, sooperlooper, audacity, a dunlop crybaby wah-wah pedal, and a seymour duncan tweakfuzz pedal. Anyways, my question is about jack and more specifically, jackdmp. I recently compiled and installed jackdmp from a subversion link provided on the official jack page. I read that the jackdmp installation 'replaces' files in the existing qjackctl and is made to operate better with multi-core CPUs. I use an Intel Quad Core @ 2.4GHz x 4 so this would be good for me. Is there a way I can make sure that I have installed this properly?
Fernando. I think saw that you were on the contributors list as making jackdmp compatible with fedora 13. That's what I put your name in the subject. :) Also, I was wondering if there was a site where people post the latencies they are able to achieve using jack. I think it would be interesting to see how people achieve very low-latencies and what those latencies are.
> From: planetccrma-request at ccrma.Stanford.EDU
> Subject: PlanetCCRMA Digest, Vol 30, Issue 13
> To: planetccrma at ccrma.Stanford.EDU
> Date: Sat, 14 Aug 2010 12:00:01 -0700
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> Today's Topics:
> 1. Re: jack+firewire (Oded Ben-Tal)
> 2. Re: jack+firewire (Orcan Ogetbil)
> Message: 1
> Date: Sat, 14 Aug 2010 09:38:19 -0700 (PDT)
> From: Oded Ben-Tal <oded at ccrma.Stanford.EDU>
> Subject: Re: [PlanetCCRMA] jack+firewire
> To: Orcan Ogetbil <oget.fedora at gmail.com>
> Cc: planetccrma at ccrma.Stanford.EDU
> <alpine.LFD.2.00.1008140931500.31344 at ccrma-gate.stanford.edu>
> Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
> Yes, the permission change solved the problem.
> I did notice odd behaviour with the firewire connection. Since the builtin
> firewire chip is Ricoh, when I need to connect the saffire card (which
> isn't every day) I use an expresscard (with TI chipset). Interestingly I
> need to shutdown and start again to get the system to recognise the extra
> card, just rebooting doesn't work (cold boot works hot boot doesn't). this
> isn't new, BTW, it's been the case for a while.
> and ffado-test seems to have disappeared. I added ffado-devel just in
> case but I don't seem to have it.
> On Sat, 14 Aug 2010, Orcan Ogetbil wrote:
> > On Sat, Aug 14, 2010 at 6:29 AM, Oded Ben-Tal wrote:
> >> here we go again,
> >> After I (foolishly) updated libffado last week I can't get jack to start.
> >> The error I get is:
> >> could not open driver .so '/usr/lib/jack/jack_firewire.so': libffado.so:
> >> cannot open shared object file: No such file or directory
> >> could not open component .so '/usr/lib/jack/jack_firewire.so':
> >> libffado.so: cannot open shared object file: No such file or directory
> >> Unkown driver "firewire"
> >> The file of course exists:
> >> ls -al /usr/lib*/jack/jack_firewire.so
> >> -rw-r--r--. 1 root root 35873 2009-11-21 19:22
> >> /usr/lib/jack/jack_firewire.so
> > Looks like bad permissions. Just do
> > # chmod +x /usr/lib/jack/jack_firewire.so
> > This needs to have executable permissions.
> >> This is on Fedora12 188.8.131.52-1.rt20.1.fc12.ccrma.i686.rtPAE
> >> jack-audio-connection-kit-1.9.4-1.fc12.ccrma.i686
> >> ibffado-2.0.1-3.20100706.svn1864.fc12.i686
> >> running the fwdiag script I noticed
> >> ./fwdiag: line 85: ffado-test: command not found
> >> (I presume that means at some point ffado-test was removed from the
> >> library though I'm not sure it was in the last update).
> > I don't know about the fwdiag, but to get the ffado-test you need to
> > install the ffado package
> > # yum install ffado
> > The libffado package contains the library only. The applications stuff
> > are in the ffado package.
> > Orcan
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> Message: 2
> Date: Sat, 14 Aug 2010 12:53:14 -0400
> From: Orcan Ogetbil <oget.fedora at gmail.com>
> Subject: Re: [PlanetCCRMA] jack+firewire
> To: S C Rigler <riglersc at gmail.com>
> Cc: Oded Ben-Tal <oded at ccrma.Stanford.EDU>,
> planetccrma at ccrma.Stanford.EDU
> <AANLkTi=2Hr2woG4XQsVxYwdhX5YLbMMASreJSZvX0mLj at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
> On Sat, Aug 14, 2010 at 10:10 AM, S C Rigler wrote:
> > On Sat, 14 Aug 2010 08:13:53 -0500, Orcan Ogetbil
> > wrote:
> >> I don't know about the fwdiag, but to get the ffado-test you need to
> >> install the ffado package
> >> # yum install ffado
> >> The libffado package contains the library only. The applications stuff
> >> are in the ffado package.
> >> Orcan
> > It doesn't look like ffado-test made it into my install of ffado:
> Sorry, I meant ffado-diag. Refreshing my memory, I realized that we
> left the test suite out during the package review since it seemed like
> the tests were for development purposes only. Of course this might be
> a wrong assumption. Currently, the test suite consists of:
> Do you folks need any of these executables bundled in the ffado
> package? Or maybe, do you need all of them?
> If that's the case, please file a bug at https://bugzilla.redhat.com
> with the reasons so that I have a reference. When people ask me "Why
> did you re-include the tests?" I can say "Look at this bug, the users
> need these tests."
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> End of PlanetCCRMA Digest, Vol 30, Issue 13
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