*** This bug is a duplicate of bug 1627769 ***
https://bugs.launchpad.net/bugs/1627769
exactly same problem
ubuntu 18.04.03
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https://bugs.launchpad.net/bugs/1693024
Title:
can't start JACK with real-time scheduling even when in audio group
Status in jackd2 package in Ubuntu:
Confirmed
Bug description:
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
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:~$
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
===
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