Cannot connect to server socket err = No such file or directory when using QjackCtl

When I try to start a jack server I get these error messages and also a window pops up saying:

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 idea on how to fix this? I am using Ubuntu 14.04. This is my jackd --version output:

jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 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
no message buffer overruns
no message buffer overruns
no message buffer overruns
jackdmp version 1.9.10 tmpdir /dev/shm protocol 8

3

1 Answer

how do you start jack ?

some suggestions:

run jack as user, not as root
try using qjackctl
adjust
/etc/security/limits.d/audio.conf
if required (for realtime audio only !!)
disable autospawn in /etc/pulse/client.conf
and stop pulseaudio
sudo pulseaudio --kill

if you get jack running, later you can

sudo apt-get install pulseaudio-module-jack

and re-enable pulseaudio

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