[Bug 1731794] Re: package grub-common 2.02~beta2-36ubuntu3.12 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1

[Phillip Susi]

Looks like a systemd problem:

Failed to execute operation: Connection timed out
Failed to retrieve unit: Connection timed out
Failed to stop grub-common.service: Connection timed out


** Package changed: grub2 (Ubuntu) => systemd (Ubuntu)

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Title:
  package grub-common 2.02~beta2-36ubuntu3.12 failed to install/upgrade:
  subprocess new pre-removal script returned error exit status 1

Status in systemd package in Ubuntu:
  New

Bug description:
  My ubuntu system locks up regularly. Bugs I've reported about this get
  closed for inattention, after being ignored, and queries about how to
  do basic debugging get the same treatment, so I just power cycle
  whenever it happens again.

  This time the lock up happened while the GUI upgrade-everything-to-
  latest tool was running.

  When I power cycled the box to recover, the system was unusable -
  flashing "system problem detected" popups, none staying stable long
  enough to respond.

  ssh + "sudo apt-get update" + "sudo apt-get upgrade" pointed me to
  "sudo dpkg --configure -a"

  That command reported numerous errors - I don't know which of them are
  "normal" for this system, but hidden by the GUI, and which are new.

  But it got the system semi-usable from the GUI, so now I'm clicking on
  "yes, report it" for the many pop-ups, of which this is one.

  FWIW, grub2-common is one of the ones "dpkg --reconfigure -a"
  complained about.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-common 2.02~beta2-36ubuntu3.12
  ProcVersionSignature: Ubuntu 4.4.0-93.116-generic 4.4.79
  Uname: Linux 4.4.0-93-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  Date: Sun Nov 12 10:59:44 2017
  ErrorMessage: subprocess new pre-removal script returned error exit status 1
  InstallationDate: Installed on 2012-04-26 (2026 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-93-generic root=UUID=96551326-e461-4071-ab9c-0e81ad7015d7 ro quiet splash
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.24
  SourcePackage: grub2
  Title: package grub-common 2.02~beta2-36ubuntu3.12 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1
  UpgradeStatus: Upgraded to xenial on 2017-03-31 (226 days ago)

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