Re: jackd/ardour setup problem
On Sun, May 09, 2004 at 04:09:06PM -0400, Thomas H. George wrote:
> On Sun, May 09, 2004 at 01:32:28PM -0400, Chris Metzler wrote:
> > On Sun, 09 May 2004 13:20:33 -0400
> > "Thomas H. George" <firstname.lastname@example.org> wrote:
> > >
> > > I am using a 2.6.3 kernel with ALSA modules and a PCI EMU10K1 module.
> > > Sound is perfect - that is, a phonograph input to the sblive card and
> > > output from the sblive card to a stereo system works, workbone can play
> > > a CD and wavp can play a wav file.
> > >
> > > lsmod reports snd_emu10k1, snd_pcm used by snd_pcm_oss and snd_emu10k1
> > > plus a lot of other snd_ entries.
> > In general, it's a good idea to list them all; but in this case, it
> > probably won't be necessary.
> > > jackd -v -d alsa runs - i.e. I must stop it with ctl-c - but Ardour
> > > aborts with a message that it cannot connect to jack. A sample of the
> > > jack output is attached.
> > First, let's just deal with this case, the simplest. When you run jackd,
> > what user are you running it as? And when you run Ardour, what user
> > are you running it as? I got this problem at one point because I was
> > running jackd as root (in order to take advantage of realtime scheduling),
> > but Ardour as a regular user. They have to be the same user.
> I was aware of this from the jack man page and was careful to start both
> as a regular user.
> > If that's not the case, put Ardour aside for the moment and try out
> > some other jackd clients, like Hydrogen or Rosegarden4. Do they
> > connect with jackd ok? The patchbay in qjackctl is invaluable for
> > checking this stuff.
> Following this suggestion I downloaded Hydrogen and played a demo.
> Checking preferences, I found Oss was selected. When I changed this to
> Jack there was a error message, "Error starting audio driver."
> I have not tried downloading Rosegarden4 as I do not have KDE installed
> - I am just using xdm with icewm.
> I can't locate qjackctl. Is this part of Rosegarden4?
Correction. I did find and download qjackctl. It reports "jackstart:
cannot get realtime capabilities ... probably running under a kernel
with capabilities disabled." I am trying to figure out how to correct
> > -c
> > P.S. You are *much much* more likely to get help with this on the
> > linux-audio-user mailing list than here. Issues with ardour and
> > jackd are the staple of that mailing list. In contrast, while
> > they may have been discussed here before, I've *never* seen them
> > discussed here.
Good point. Will start searching the linux-audio-user archive.
> > --
> > Chris Metzler email@example.com
> > (remove "snip-me." to email)
> > "As a child I understood how to give; I have forgotten this grace since I
> > have become civilized." - Chief Luther Standing Bear
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