Description of problem: Attempting to start jackd with realtime scheduling (the '-R' flag) results in the follow errors: Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user [...] Cannot use real-time scheduling (RR/20)(1: Operation not permitted) AcquireSelfRealTime error This prevents applications that rely on jack, such as "ardour", to fail. Version-Release number of selected component (if applicable): jack-audio-connection-kit-1.9.10-1.fc21.x86_64 How reproducible: Always Steps to Reproduce: 1. Run 'jackd -R -d alsa' 2. Sadness Additional info: I have read through /usr/share/doc/jack-audio-connection-kit/README.Fedora. My user is a member of the "jackuser" and "audio" groups: $ groups lars wheel audio mock virt jackuser docker There are limits set in /etc/security/limits.d/95-jack.conf: @jackuser - rtprio 99 @jackuser - memlock 4194304 And they are active: $ ulimit -r 99 $ ulimit -l 4194304
Any progress here? Workarounds?
Nope, not a peep. A colleague suggested asking the folks behind the "Fedora Jam" audio spin (https://fedoraproject.org/wiki/Fedora_Jam_Audio_Spin), but I haven't pursued that yet myself.
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Fedora 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.