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[Iain Lane <iain@xxxxxxxxxxxxxxxxxxx>]

Also magic sysrq+b works to reboot when it is hanging.

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https://bugs.launchpad.net/bugs/1427672

Title:
  System doesn't power off when shutting down

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  1. Open the session indicator (cog in top-right)
  2. Shut Down...
  3. Shut Down
  4. The monitors go blank
  5. The system doesn't power off (waited > 5 minutes)

  Things which do work

   - poweroff -f
   - Changing to a debug shell and shutting down using login1.Manager PowerOff

  I can't use the system-shutdown/ functionality since shutdown doesn't
  get that far. I can't SSH in since network is down. I can't switch VT
  when it's in this state so I'm not able to interact with the system. I
  can't see anything on the monitors since they are turned off.

  Any tips on how to get useful debugging information? I'll attach
  journalctl from the previous boot but the last message is the journal
  shutting down so it's not that useful I don't think. Also syslog.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: systemd 219-4ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
  Uname: Linux 3.19.0-7-generic x86_64
  ApportVersion: 2.16.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Mar  3 12:57:33 2015
  InstallationDate: Installed on 2012-10-07 (876 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121007)
  MachineType: System manufacturer System Product Name
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-7-generic root=UUID=980689ca-e7d9-4a99-8230-33b8b6e917cd ro nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw systemd.debug-shell nomdmonddf nomdmonisw
  SourcePackage: systemd
  UpgradeStatus: Upgraded to vivid on 2013-05-07 (665 days ago)
  dmi.bios.date: 08/17/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1201
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8Z77-V LX
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1201:bd08/17/2012:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8Z77-VLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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