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Old 05-16-2009, 06:44 AM   #1
dodgyg1
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Registered: May 2009
Posts: 2

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Problem with sound in Ubuntu


Hi,

New to forum and new to Linux. First impressions of Ubuntu were good and I find myself spending more time in Linux than in windows. However I am having major problems getting sound to work in Ubuntu. I have trawled through several posts but I am struggling with using shell.

I have a terratec DMX6fire 24/96 soundcard (pci) and have alsa installed. Running the tests in system/preference/sound the soundcard is listed and the correct driver associated ICE1712 but each test produces the following or similar error message

audiotestsrc wave=sine freq=512 ! audioconvert ! audioresample ! gconfaudiosink: Could not open audio device for playback.

I also have a problem with JACK which may or may not be related. When I start JACK I get the following message

11:41:29.553 Patchbay deactivated.
11:41:29.774 Statistics reset.
11:41:29.794 ALSA connection graph change.
11:41:30.116 ALSA connection change.
11:41:35.354 Startup script...
11:41:35.355 artsshell -q terminate
sh: artsshell: not found
11:41:35.758 Startup script terminated with exit status=32512.
11:41:35.759 JACK is starting...
11:41:35.759 /usr/bin/jackd -R -dalsa -dhw:0 -r44100 -p1024 -n2
11:41:35.775 JACK was started with PID=4667.
no message buffer overruns
jackd 0.116.1
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.
cannot use real-time scheduling (FIFO at priority 10) [for thread -1211483392, from thread -1211483392] (1: Operation not permitted)
cannot create engine
11:41:35.794 JACK was stopped successfully.
11:41:35.795 Post-shutdown script...
11:41:35.796 killall jackd
jackd: no process killed
11:41:36.206 Post-shutdown script terminated with exit status=256.
11:41:37.931 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info.

Any help would be appreciated but please be very specific with any terminal commands as these are completely new to me.

Thanks.
 
Old 05-16-2009, 02:03 PM   #2
masterclassic
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Registered: Jun 2007
Distribution: Knoppix
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Although I have no solution for this specific problem, I recently did a search myself about Linux compatibility for such performant sound cards like M-audio, Terratec etc and found the advice to use a special kernel build instead of those used in the various distributions. The key point seems to be that some parameters related to the real time execution, very low latency and high priority for audio aren't activated to the general usage distributions. There is even a special Debian multimedia project.

In a similar manner, the professional audio manufacturers made ASIO for mswindows, to overcome the problem of very high latency of that system.

I hope that this will help in your search for the best performance of this quality hardware.
 
Old 05-16-2009, 06:44 PM   #3
dodgyg1
LQ Newbie
 
Registered: May 2009
Posts: 2

Original Poster
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Thanks

Thanks masterclassic for your time. Whilst it doesn't solve my problem it gives me an idea that maybe linux isn't right for what I am doing. I am evaluating it for a serious music production role that it may not be ready for. Any musos out there using linux please add your comments/experiences.
 
  


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