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[Nick Rosbrook <2111107@xxxxxxxxxxxxxxxxxx>]

These patches were backported to v257.5 and later. I uploaded v257.6 to
questing recently, so this should be fixed (once that migrates) in
devel.

I did confirm the bug is present in plucky using the repro from the
upstream bug report:

$ systemctl --user status > /dev/null
$ systemd-analyze --user verify /usr/lib/systemd/user/systemd-tmpfiles-setup.service
$ systemctl --user status
Failed to connect to user scope bus via local transport: Connection refused

# Workaround
$ unset XDG_RUNTIME_DIR
$ systemctl --user daemon-rexec

** Changed in: systemd (Ubuntu)
       Status: New => Fix Committed

** Changed in: systemd (Ubuntu Plucky)
       Status: New => Triaged

** Changed in: systemd (Ubuntu Plucky)
   Importance: Undecided => Medium

** Tags added: dcr-incoming

** Tags added: systemd-sru-next

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https://bugs.launchpad.net/bugs/2111107

Title:
  systemd user scope fails to connect

Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Plucky:
  Triaged

Bug description:
  Using systemd --user for several user-level services. Upgraded to
  25.04 yesterday and noticed an issue today. Sometimes systemctl --user
  commands, threw a "Connection refused", which was new to me.

  Example:
  user@host:~$ systemctl --user daemon-reload  
  Failed to connect to user scope bus via local transport: Connection refused

  So I went to look online and found this workaround in this thread for Arch ( https://bbs.archlinux.org/viewtopic.php?id=302556 ):
  unset XDG_RUNTIME_DIR
  systemctl --user daemon-reexec

  I know it's a different distro, but still wanted to mention it,
  especially since we're also using systemd 257 and this should be fixed
  in 258. The mentioned upstream bugreport:
  https://github.com/systemd/systemd/issues/36540

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: systemd 257.4-1ubuntu3
  ProcVersionSignature: Ubuntu 6.14.0-15.15-generic 6.14.0
  Uname: Linux 6.14.0-15-generic x86_64
  ApportVersion: 2.32.0-0ubuntu5
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CloudArchitecture: x86_64
  CloudID: none
  CloudName: none
  CloudPlatform: none
  CloudSubPlatform: config
  CurrentDesktop: sway
  Date: Fri May 16 15:49:11 2025
  InstallationDate: Installed on 2022-05-14 (1098 days ago)
  InstallationMedia: Ubuntu-Server 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220421)
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.14.0-15-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro
  SourcePackage: systemd
  SystemdFailedUnits:
   Error: command ['systemctl', 'status', '--full', '●'] failed with exit code 4: Invalid unit name "●" escaped as "\xe2\x97\x8f" (maybe you should use systemd-escape?).
   Unit \xe2\x97\x8f.service could not be found.
   ------
   Error: command ['systemctl', 'status', '--full', '●'] failed with exit code 4: Invalid unit name "●" escaped as "\xe2\x97\x8f" (maybe you should use systemd-escape?).
   Unit \xe2\x97\x8f.service could not be found.
  UpgradeStatus: Upgraded to plucky on 2025-05-15 (1 days ago)
  dmi.bios.date: 08/21/2024
  dmi.bios.release: 5.17
  dmi.bios.vendor: American Megatrends International, LLC.
  dmi.bios.version: L3.47
  dmi.board.name: B550 Phantom Gaming-ITX/ax
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvrL3.47:bd08/21/2024:br5.17:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnB550PhantomGaming-ITX/ax:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuToBeFilledByO.E.M.:
  dmi.product.family: To Be Filled By O.E.M.
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.sku: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  modified.conffile..etc.logrotate.d.apport: [modified]
  modified.conffile..etc.systemd.journald.conf: [modified]
  mtime.conffile..etc.logrotate.d.apport: 2023-01-22T12:04:04.279288
  mtime.conffile..etc.systemd.journald.conf: 2022-08-13T22:29:21.911636

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