[linux-audio-user] Cannot get qjackctl, jackd, alsa working.

[David Froseth]

Guys,
	I am not a total newcomer to the command line.  I have been using the 
CLI for about two years.  I have been installing, compiling, and using 
*nix programs, which have been ported over to OSX's X11.  I have had a 
linux box (which I build into a server case, so I can take it to gigs) 
for about a month. I have found that linux is very similar to OSX 
command line, so everything has carried over (and sftp'ed and scp'ed 
over) easily.
	I am a newcomer to linux audio, though.  The cd player works and I can 
hear sound in the headphones from the motherboard soundcard.  Ardour is 
compiled and installed, and many of the other sound programs are 
installed and launch fine, but I am snagged by the jack/qjackctl thing.
	You can suggest command line stuff. I am sure there are big holes in my 
understanding, but I don't think I will accidentally erase my hard drive.

My current status with jack, qjackctl is as follows.  If I run 'jackd' 
from the command line, I get:

$ jackd -d alsa
jackd 0.102.20
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.
loading driver ..
creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
control device hw:0
configuring for 48000Hz, period = 1024 frames, buffer = 2 periods
ALSA: final selected sample format for capture: 32bit little-endian
ALSA: use 2 periods for capture
ALSA: final selected sample format for playback: 32bit little-endian
ALSA: use 2 periods for playback

It looks like jack is working.  But when I next run 'qjackctl' from the 
command line, I get:

$ qjackctl
X Error: BadDevice, invalid or uninitialized input device 166
   Major opcode:  144
   Minor opcode:  3
   Resource id:  0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 166
   Major opcode:  144
   Minor opcode:  3
   Resource id:  0x0
Failed to open device
Warning: no locale found: /usr/share/locale/qjackctl_en_US.UTF-8.qm

Also, the qjackctl GUI window launches and displays this message:

jackd 0.102.20
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.
`default' server already active
14:01:59.752 JACK was stopped with exit status=1.
14:01:59.945 Could not connect to JACK server as client. Please check 
the messages window for more info.
14:02:05.182 MIDI connection change.

qjackctl cannot connect to jack server as client. (?)

Thanks for the help!

Dave


Paul Davis wrote:
> On Mon, 2006-11-13 at 11:19 +0100, Hartmut Noack wrote:
> 
>>-----BEGIN PGP SIGNED MESSAGE-----
>>Hash: SHA1
>>
>>David Froseth schrieb:
>>
>>
>>>And Hartmut, I have a Pentium D 930 Dual-core Processor. I don't think
>>>the ubuntumusique-repo kernel will work with this.
>>>
>>
>>I think it would, yet it would of course not get the best out of your
>>processor so build a kernel from source may be th better way to get the
>>thing working.
> 
> 
> david is a newcomer to linux, isn't confident about what "groups" are,
> and you're suggesting to him that he should build his kernel from
> source?
> 
> david, have you tried running jack from the command line, without
> qjackctl?
> 
> 
> 
> 
>