[LAU] [jack] not running (permissions)[solved]

Studio 32 32studio at live.com
Fri Feb 8 05:54:04 EST 2008


Hi,

When I want to use jack I always have to give the command 'modprobe snd-seq'. I've now fluxbox installed and jack starts automatically, and I like the speed of fluxbox and automatic starting progs which I need. The command slows the whole process down.... irritating....

How can I make that command not necessary anymore?

Thanks! 


----------------------------------------
> Date: Sat, 5 Jan 2008 10:46:13 -0500
> From: paul at linuxaudiosystems.com
> Subject: Re: [LAU] [jack] not running (permissions)[solved]
> To: 32studio at live.com
> CC: tschoseb at tu-cottbus.de; linux-audio-user at lists.linuxaudio.org
> 
> On Sat, 2008-01-05 at 11:16 +0000, Studio 32 wrote:
>> Sorry, another question about something I want to understand...
>> 
>> It about conflicting 'sound-systems' like alsa and jack.
> 
> they don't conflict, JACK uses ALSA. but we know what you mean.
> 
>> 
>> When I start for example qjackctl I'll get a message about problems with connection to alsa midi sequencer or something.
>> I can solve that issue with: modprobe snd-seq
> 
> yes, most non-music-oriented distributions have, for some reason,
> decided not to load the ALSA MIDI router/sequencer module by default. it
> is a shame.
> 
>> But when I quit jack and want for example use tuxguitar with a custom soundbank, I can get sound anymore... Is that because of snd which is running in the background? How can I stop that process?
> 
> JACK more or less requires exclusive access to the audio interface
> hardware. If you want to run an application that does not interface with
> JACK (and these days, most music-creation related applications do), you
> do have to stop JACK. If JACK is not running and tuxguitar still cannot
> run, the problem is with some system daemon that has taken control of
> the audio interface. the command
>   
>    fuser /dev/snd/pcmC0D0p
> 
> will reveal which process has the playback device open.
> 
> --p
> 
> 
> 

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