From 5f583562d714c08b76801b6eccac53ee40590d04 Mon Sep 17 00:00:00 2001
From: Paul Davis
- To function as intended, JACK needs to run with access to two - operating system facilities called "realtime scheduling" and "memory - locking". This means that you, the user who starts JACK, must be - allowed access to these facilities. By default, Ubuntu does create a - user group that has this permission but ... it does not put new - users into this group by default. Consequently, you will not have - permission to run JACK in the way you should. -
++ To function as intended, JACK needs to run with access to two + operating system facilities called "realtime scheduling" and "memory + locking". This means that you, the user who starts JACK, must be + allowed access to these facilities. By default, Ubuntu does create a + user group that has this permission but ... it does not put new + users into this group by default. Consequently, you will not have + permission to run JACK in the way you should. +
++ A message like "Cannot lock down memory" in the output from JACK as + it starts up. This output may be "hidden" in the Messages window of + QJackctrl (aka JACK Control), so you should check there. +
+
+ Run the command sudo usermod -a -G
+ audio YOUR-LOGIN-NAME
. Then logout and login again.
+
- A message like "Cannot lock down memory" in the output from JACK as - it starts up. This output may be "hidden" in the Messages window of - QJackctrl (aka JACK Control), so you should check there. -
- -
- Run the command sudo usermod -a -G
- audio YOUR-LOGIN-NAME
. Then logout and login again.
-