[Jack-Devel] jack muted but plain alsa works

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DateMon, 18 Jun 2012 23:18:33 +0200
From Jan Kohnert <[hidden] at jankoh dot dyndns dot org>
To[hidden] at lists dot jackaudio dot org
Follow-UpAdrian Knoth Re: [Jack-Devel] jack muted but plain alsa works
/* Sorry, if this arrives the second time, but this is the address, I'm
 * subscribed. Sorry for the inconvenience
*/

Hi folks,

I'm having an issue getting jack (latest git commit from half an hour ago, but 
the problem exists also on 1.9.8) to run on my shiny new machine (x86_64, 
linux-3.2.14-rt). It claims to work well, but I don't get any sound out of my 
Onyx Blackjack. When trying plain alsa output, all works fine. I have tested 
using audacity-2.0.0, but ardour-2.8.12 fails, too. 

Could you assist me finding a hint where to start searching for the error? I'm 
aware of C++ and could possibly help fiddling with the sources, but I don't 
know jacks code well enough to see the entry... 

jankoh@kohni ~ $ cat /proc/asound/cards 
 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xfdff4000 irq 16
 1 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfbffc000 irq 19
 2 [Blackjack      ]: USB-Audio - Onyx Blackjack
                      Loud Technologies Inc. Onyx Blackjack at 
usb-0000:00:13.0-5, full speed
jankoh@kohni ~ $ /usr/bin/jackd -R -P 90 -c h -d alsa -n 3 -r 48000 -d hw:2,0
jackdmp 1.9.9
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2012 Grame.
jackdmp 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 server starting in realtime mode with priority 90
control device hw:2
control device hw:2
audio_reservation_init
Acquire audio card Audio2
creating alsa driver ... hw:2,0|hw:2,0|1024|3|48000|0|0|nomon|swmeter|-|32bit
control device hw:2
configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 3 periods
ALSA: final selected sample format for capture: 24bit little-endian
ALSA: use 3 periods for capture
ALSA: final selected sample format for playback: 24bit little-endian
ALSA: use 3 periods for playback

..

jankoh@kohni ~ $ uname -a
Linux kohni 3.2.14-rt24-rt24 #1 SMP PREEMPT RT Sun Apr 22 21:22:05 CEST 2012 
x86_64 AMD FX(tm)-6100 Six-Core Processor AuthenticAMD GNU/Linux
jankoh@kohni ~ $ 

-- 
MfG Jan
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