[linux-audio-user] cannot write to jackstart sync pipe 4 (Bad file descriptor)

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 Hi there.
     I'm not a linux-guru but I'm trying to build my own audio system  
taking some pieces from A/Demudi and Sid,and compiling some others from 
source.My main goal is to learn as much as I can and get an audio system 
working  with only the components that I need.
 I take the last kernel from Demudi:2.6.13-1-multimedia-386 and 
jackd-0.100.0-4 from sid.
Compiled ardour,muse,zynaddsubfx,qsampler-linuxsampler,hydrogen,and some 
others,and everything works really well.
  I'm impressed how "stable" can be the "unstable" side of Debian.
 
  The subject of this message is the output of qjackctl when I launch  
jackd  with :
       /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p256 -n2

 or
     /usr/bin/jackd -R -dalsa -dhw:0 -r48000 -p256 -n2

*But it works fine*,I can record and playback at realtime processing 
with very good results.

 This advice doesn't appears when launch jackd from commandline:


 supertux@sid:~$ /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p256 -n2
jackd 0.100.0                  Copyright 2001-2005 Paul Davis and others.
jackd comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details

JACK compiled with System V SHM support.

My machine:
P IV 2.6 Mhz
1 Gb ddr
Terratec DMX6 Fire soundcard



 Is there something that I have to do to avoid this error?I would like 
to know why this happens.
 I'd googled about it  and find many cases where jack was stoped,but 
this is not the mine.
   Thanks in advance.

  Saludos.
  Cheers.
 -- Carlos.

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