[Bug 1922485] Re: systemd: slice: Failed to migrate controller cgroups

[Dan Streetman]

*** This bug is a duplicate of bug 1850667 ***
    https://bugs.launchpad.net/bugs/1850667

** This bug has been marked a duplicate of bug 1850667
   Switch to "unified" cgroup hierarchy (cgroupv2)

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Title:
  systemd: slice: Failed to migrate controller cgroups

Status in systemd:
  Fix Released
Status in systemd package in Ubuntu:
  Triaged
Status in systemd package in Debian:
  Fix Released

Bug description:
  Hi,

  during boot those error messages appear in the logs:

  # journalctl | grep controller
  [...]
  Apr 02 20:16:23 vougeot systemd[3155]: -.slice: Failed to migrate controller cgroups from /user.slice/user-108.slice/user at 108.service, ignoring: Permission denied
  Apr 02 20:16:31 vougeot systemd[3512]: -.slice: Failed to migrate controller cgroups from /user.slice/user-1000.slice/user at 1000.service, ignoring: Permission denied

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: systemd 247.3-3ubuntu2
  Uname: Linux 5.11.11-051111-lowlatency x86_64
  ApportVersion: 2.20.11-0ubuntu61
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Sun Apr  4 13:29:25 2021
  MachineType: TUXEDO TUXEDO InfinityBook S 15 Gen6
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.11-051111-lowlatency root=/dev/mapper/MonVolume2-UbuntuRacine ro vsyscall=none security=apparmor quiet splash vt.handoff=7
  SourcePackage: systemd
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/07/2020
  dmi.bios.release: 7.3
  dmi.bios.vendor: INSYDE Corp.
  dmi.bios.version: 1.07.03RTR
  dmi.board.name: NS50MU
  dmi.board.vendor: TUXEDO
  dmi.board.version: Not Applicable
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Notebook
  dmi.chassis.version: N/A
  dmi.ec.firmware.release: 7.2
  dmi.modalias: dmi:bvnINSYDECorp.:bvr1.07.03RTR:bd09/07/2020:br7.3:efr7.2:svnTUXEDO:pnTUXEDOInfinityBookS15Gen6:pvrNotApplicable:rvnTUXEDO:rnNS50MU:rvrNotApplicable:cvnNotebook:ct10:cvrN/A:
  dmi.product.family: Not Applicable
  dmi.product.name: TUXEDO InfinityBook S 15 Gen6
  dmi.product.sku: Not Applicable
  dmi.product.version: Not Applicable
  dmi.sys.vendor: TUXEDO
  modified.conffile..etc.systemd.resolved.conf: [modified]
  mtime.conffile..etc.systemd.resolved.conf: 2021-04-02T13:37:46.839143

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