Looks as though this was reported [1], and turns out is actually a bug in systemd <=240 [2]. Shows as fixed in systemd 241 [3].
[1] https://github.com/jackaudio/jack2/issues/429 [1] https://github.com/systemd/systemd/issues/11386 [2] https://github.com/systemd/systemd/pull/11448 ** Bug watch added: github.com/jackaudio/jack2/issues #429 https://github.com/jackaudio/jack2/issues/429 ** Also affects: jack via https://github.com/jackaudio/jack2/issues/429 Importance: Unknown Status: Unknown ** Also affects: systemd (Ubuntu) Importance: Undecided Status: New ** Bug watch added: github.com/systemd/systemd/issues #11386 https://github.com/systemd/systemd/issues/11386 ** No longer affects: jack ** Changed in: jackd2 (Ubuntu) Status: New => Invalid ** Changed in: systemd (Ubuntu) Status: New => Confirmed ** Also affects: systemd via https://github.com/systemd/systemd/issues/11386 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to jackd2 in Ubuntu. https://bugs.launchpad.net/bugs/1832651 Title: jackdbus fails to start: cannot allocate memory Status in systemd: Unknown Status in jackd2 package in Ubuntu: Invalid Status in systemd package in Ubuntu: Confirmed Bug description: The `.log/jack/jackdbus.log` shows the following after trying to start/restart jack using "Ubuntu Studio Controls" (also tried using `jack_control start`): ERROR: Cannot lock down 82280346 byte memory area (Cannot allocate memory) This is a fresh install of Ubuntu Studio 19.04, installed via USB. The first thing I did after installing was check to see if jack was running, but unfortunately it's not working. The error would seem to indicate that I'm not in the `audio` group, however checking `groups` shows that I am in the audio group. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: jackd2 1.9.12~dfsg-2build1 ProcVersionSignature: Ubuntu 5.0.0-13.14-lowlatency 5.0.6 Uname: Linux 5.0.0-13-lowlatency x86_64 ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 CurrentDesktop: GNOME Date: Wed Jun 12 18:13:25 2019 InstallationDate: Installed on 2019-06-12 (0 days ago) InstallationMedia: Ubuntu-Studio 19.04 "Disco Dingo" - Release amd64 (20190416) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.utf8 SHELL=/bin/bash SourcePackage: jackd2 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/systemd/+bug/1832651/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
