David Froseth wrote: > Rui, > I clicked 'Applications > Sound & Video > JACK Control' from the > Ubuntu/Gnome GUI as normal user. I do not know what the realtime-lsm > module is or pam security rlimits are. Could you elabourate or direct > me to some reading material? > Unbuntustudio.org might have something for you spending some time reading. I found this primordial url: https://help.ubuntu.com/community/UbuntuStudioPreparation Don't know if it will do on your particular case, but I guess you'll be on the right track in adding your regular username to the "audio" group and check whether your /etc/security/limits.conf file has something similar as I have on my opensuse boxes, like the following: @audio - rtprio 90 @audio - nice -10 @audio - memlock 4000000 Bye. -- rncbc aka Rui Nuno Capela rncbc@xxxxxxxxx