Please see attached systemd log ** Attachment added: "jrn" https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1877129/+attachment/5367437/+files/jrn
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to jackd2 in Ubuntu. https://bugs.launchpad.net/bugs/1877129 Title: jackd won't run in realtime Status in jackd2 package in Ubuntu: Incomplete Bug description: Was using jackd2 for ages, never had this issue. The usual limits.conf tweaks are present. Jackd won't run in realtime even as root. It's very easy to reproduce in Focal. Before upgrade, was working: Ubuntu 18.04.4 LTS uname -r kernel 5.3.0-51-generic jackd --version jackdmp version 1.9.12 tmpdir /dev/shm protocol 8 After upgrade: Ubuntu 20.04 LTS uname -r 5.4.0-29-generic jackd --version jackdmp version 1.9.12 tmpdir /dev/shm protocol 8 Simple test: jackd -R -d dummy -r192000 -p2048 jackdmp 1.9.12 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2016 Grame. Copyright 2016-2017 Filipe Coelho. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user no message buffer overruns Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user no message buffer overruns Cannot create RT messagebuffer thread: Operation not permitted (1) Retrying messagebuffer thread without RT scheduling Messagebuffer not realtime; consider enabling RT scheduling for user no message buffer overruns JACK server starting in realtime mode with priority 10 self-connect-mode is "Don't restrict self connect requests" Cannot use real-time scheduling (RR/10)(1: Operation not permitted) AcquireSelfRealTime error I'm guessing that it's not jack itself (package ver. seems to be the same as bionic, without new feats), smth is missing in the kernel config. I would try RT kernel, but it usually does not boot at all thanks to Nvidia blob on that system. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jackd2/+bug/1877129/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
