[Bug 1670291] Re: Landscape: Upgrade 14.04.5 to 16.04.2 fails unable to reboot

[Damiön la Bagh]

Was able to reboot by sshing into the machine and rebooting with error
message but it still went through with the reboot.

Landscape is now stuck on In Progress 
 	In progress 	Upgrade from trusty to xenial

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https://bugs.launchpad.net/bugs/1670291

Title:
  Landscape: Upgrade 14.04.5 to 16.04.2 fails unable to reboot

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Used Landscape (Paid Canonical Subscription) to upgrade one of my
  machines.

  Landscape only shows "In Progress" for more than 8 hours now and asked
  for a reboot of the machine in a second alert.

  In the reboot attempt I get the message:
  =========================
  Failed to set wall message, ignoring: Method "SetWallMessage" with signature "sb" on interface "org.freedesktop.login1.Manager" doesn't exist
  Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: Method "ScheduleShutdown" with signature "st" on interface "org.freedesktop.login1.Manager" doesn't exist
  =========================

  Steps to reproduce:
  * Fully updated 14.04.5 machine
  * Open Landscape
  * Choose the machine
  * Choose Packages
  * This computer can be upgraded to a newer release
  * Apply
  * Wait 2 hours
  * Alert comes in a seperate Landscape message Machine is ready for reboot
  * Choose Info... Power
  * Deliver to selected computers as soon as possible
  * Error message

  I found this thread on reddit about this issue maybe the solution can be built into the upgrade script
  https://www.reddit.com/r/linuxquestions/comments/4wy3go/trying_to_run_as_user_instance_but_the_system_has/

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