jackdbus fails to start: cannot allocate memory

[Ben Davis]

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)

[Erich Eickmeyer (eeickmeyer)]

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

[Ben Davis (bendavis78)]

How does one upgrade to systemd-241 in ubuntu?

[Erich Eickmeyer (eeickmeyer)]

@bendavis78 It's currently not possible. However, if you watch the natural progression of things, it's likely to land in Ubuntu 19.10 if the pattern of the past few releases holds.

[Ben Davis (bendavis78)]

Is there a workaround? This is currently breaking my entire audio setup (using Ubuntu Studio, where jackd is crucial)

[Hauke Wintjen (hwintjen)]

I am also affected by this bug as it seems. I am also unable to start jackd2:

Thu Jul 4 08:17:50 2019: JACK server starting in realtime mode with priority 99
Thu Jul 4 08:17:50 2019: self-connect-mode is "Don't restrict self connect requests"
Thu Jul 4 08:17:50 2019: ERROR: Cannot lock down 82280346 byte memory area (Cannot allocate memory)

My systemd is:
hcw@nvidion:~$ dpkg -l systemd
+++-==============-==============-============-=================================
ii systemd 240-6ubuntu5.1 amd64 system and service manager

So is there a workaround / upgrade path? I dont want do wait 4 months before i can start podcasting..... 8-<

Kind regards

Hauke

[Brian Murray (brian-murray)]

I was unable to recreate this on an installation of Eoan, which will become Ubuntu 19.10, using systemd version 241-7ubuntu1 and jackd2 version 1.9.12~dfsg-2build1 subsequently I'm setting the Eoan task to Fix Released.

[John Sweeney (john-sweeney)]

This bug also affects me with jackdbus. I too need a workaround