[PlanetCCRMA] Re: Problems starting JACK

Mike Jewell msjmsj49@hotmail.com
Wed Jun 22 13:34:00 2005

>From: Mark Knecht <markknecht@gmail.com>

> > Mike Jewell wrote:
> >
> > > Those *fifo* files you found are on my system as well.
> > > I deleted them and it didn't help.
> > > Rebooting fixed it so qjackctl will start up JACK ok.
> > > Sure is a pain when it happens.  Rebooting to fix application problems
> > > is "so Windows".     8^)
> >
> > [above quotation snipped in places]
> >
> > Thinking about this some more...
> >
> > Now, I would imagine that these files are deleted when jack is stopped.
> >
> > Once (maybe twice) someone else who lives here accidentally pulled the
> > power to my machine. (I think it's time to get a UPS. If only I were
> > wealthy...) I'm guessing it's possible that these files were not removed
> > when jack was rudely interrupted, and that this caused the problem.
> > Could that be the case?
> >
> > Thanks
> > Michael

Mark Knecht wrote:
>In all likelihood, yes, that's exactly what caused it. The files are
>normally removed when Jack terminates cleanly, and the files are the
>only method Jack has to determine if another copy of Jack is running.
>Rebooting is not necessary. Rebooting will not clean up the files.
>- Mark

I'm sure you're right, Mark, rebooting is not going to remove those files.  
But there must be something else that is telling JACK (or qjackctl) that 
there is another one already running because I deleted them and then even 
logged out and back in and qjackctl would STILL not start JACK.   So, as 
last resort, I rebooted and then all was back to normal.

So where else could JACK (or qjackctl for that matter) be keeping info about 
a past session?

Mike Jewell