> Once you have a low-latency kernel, check related
> configuration in:
> 
>    /etc/security.d/limits.conf  , or 
> 
>    /etc/security/limits.d/audio.conf
> 

Oops, I meant:

   /etc/security/limits.conf  , or

   /etc/security/limits.d/audio.conf

Mine had at least:

@audio   -  rtprio     70
@audio   -  memlock    unlimited
@audio   -  nice      -10


it means your userid, which start jackd, needs to belong to the groupid called 
"audio".

I think in Debian, the "/etc/security/limits.d/audio.conf" portion is done by 
the package manager when jackd2 is configured to use realtime priority.  But 
you need to check the userid that starts up jackd belongs to the audio group.  
The command "groups" should list all the groupid's that the current user 
belongs to.

This is the "low-latency" configuration portion of a pre-compiled low-latency 
kernel.

You can check to see similar configuration done within the Musix liveCD 
environment.

Again, once you understand all the numerous steps and things which need to be 
in placed, you can configure any Linux distro to do similar thing, but each 
distro may have done things slightly different.  If any of those are out of 
placed, you may not get Linux MIDI to work, or may have numerous problems like 
no sound, latency (out of sync, long delayed note) issues, skipped notes...

Jimmy


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