I believe this problem may have to with Ubuntu's recent transition to systemd. Apparently systemd completely ignores /etc/security/limits*.
** Description changed: I'm running Ubuntu 17.04. I've installed jack2 and have added myself to the 'audio' group as suggested at - http://jackaudio.org/faq/linux_rt_config.html + http://jackaudio.org/faq/linux_rt_config.html But when I start JACK it reports Tue May 23 16:10:24 2017: ERROR: Cannot use real-time scheduling (RR/10)(1: Operation not permitted) Tue May 23 16:10:24 2017: ERROR: AcquireSelfRealTime error I am in the 'audio' group in /etc/group: adam:~$ grep audio /etc/group audio:x:29:pulse,adam adam:~$ (I restarted the machine after adding myself to this group.) 'ulimit' isn't showing real-time priority privileges for me: adam:~$ ulimit -a | grep real real-time priority (-r) 0 - adam:~$ + adam:~$ - The file /etc/security/limits.d looks like this: + The file /etc/security/limits.d/audio.conf looks like this: === # Provided by the jackd package. # # Changes to this file will be preserved. # # If you want to enable/disable realtime permissions, run # # dpkg-reconfigure -p high jackd @audio - rtprio 95 @audio - memlock unlimited #@audio - nice -19 === -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1693024 Title: can't start JACK with real-time scheduling even when in audio group To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1693024/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
