Re: [FFADO-devel] Cannot get raw1394 handle

[Jonathan W. <jw...@ph...>]

Hi Patrick

> > I am having problems running jackd since I did an update of libffado.  I'm
> > getting this error:
> >
> > Error (ieee1394service.cpp)[ 136] detectNbPorts: Could not get libraw1394
> > handle.
> 
> Turns out the permissions of /dev/raw1394
> were no longer correct.  chmod a+rw /dev/raw1394 fixed the problem.

I was just about to hit "send" on an email to suggest you check permissions
of /dev/raw1394.  Good catch.

> Not sure why this would have changed.  I grep'ed my udev configuration
> files and I don't see any reference to raw1394.  Should there be, and if
> so, what should it be?

I actually have an intense distrust of udev ever since an early buggy
version caused me much grief many years ago by deleting and not reinstating
critical device nodes.  Consequently I generally don't enable it on my
systems at present and therefore I'm not really in a position to help with
its configuration.  udev will make a reappearance on my systems when there's
a real need for it, but up to now it's simply another complication I don't
presently need to worry about. :-)

Regards
  jonathan