No sound when running JACK - was confused with No sound without, when not running JACK

Ralf Mardorf ralf.mardorf at
Mon Sep 13 06:27:23 BST 2010

On Sun, 2010-09-12 at 23:54 -0500, Kenneth Koym wrote:

> JACK is running in realtime mode, but you are not allowed to use
> realtime scheduling.
> 22:31:01.338 JACK was started with PID=2028.
> Your system has an audio group, but you are not a member of it.
> Please add yourself to the audio group by executing (as root):
> usermod -a -G audio (null)

You need to run 'sudo usermod... ' or 'sudo -i' and then 'usermod...'
and IIRC then you need to log out and log in again, perhaps it's written
somewhere, maybe here, didn't read it completely: Or start
jackd without realtime mode, run 'jackd --help', for older versions you
need to drop the '-R' switch, but for the current version you need a
switch to disable realtime mode.

- Ralf

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