[PlanetCCRMA] qjackctl/jackd acting differently?

Fernando Lopez-Lezcano nando@ccrma.Stanford.EDU
Mon Sep 19 18:07:01 2005


On Mon, 2005-09-19 at 17:57 -0700, bernie arai wrote:
> On Mon, 2005-09-19 at 16:44, Fernando Lopez-Lezcano wrote:
> > On Mon, 2005-09-19 at 16:17 -0700, bernie arai wrote:
> > > On Sun, 2005-09-18 at 17:30, Fernando Lopez-Lezcano wrote:
> > > > On Fri, 2005-09-16 at 10:45 -0700, bernie@vcn.bc.ca wrote:
> > > [snip]
> > > > > when starting jack from qjackctl, i get:
> > > > > 
> > > > > 10:28:46.977 /usr/bin/jackd -R -dalsa -dhw:0 -r48000 -p256 -n3 -S
> > > > > 10:28:46.985 JACK was started with PID=5827 (0x16c3).
> > > > > cannot write to jackstart sync pipe 4 (Bad file descriptor)
> > > > > jackd: wait for startup process exit failed
> > > > > jackd 0.99.36
> > > > > Copyright 2001-2003 Paul Davis and others.
> > > > > 
> > > > > (etc. etc.)
> > > > > 
> > > > > it starts after that but no "RT" light in the qjackctl window. 
> > > > 
> > > > Hmmm, with the newer kernels you no longer need to use "jackstart" to
> > > > start jack. Try replacing the command in qjackctl with just "jackd"
> > > > instead. 
> > >
> > > thanks for answering.  funny, i did use the "jackd" option in qjackctl,
> > > and in the command-line call, (/usr/bin/jackd -R -dalsa -dhw:0 -r48000
> > > -p1024 -S) but that "cannot write to jackstart" still only shows up when
> > > using qjackctl (not CLI). 
> > 
> > That is strange. Look for a dot file that may be overriding things
> > (something like .jack*). 
> 
> i found .jackdrc in my ~.  it contains: /usr/bin/jackd -R -dalsa -dhw:0
> -r48000 -p1024 -n2 -S
> 
> 7813 xruns, while the CPU meter stays under 1 or 2%. weird.

Which kernel ("uname -r") and soundcard?
Have you tried with more periods (like 4)?
-- Fernando