[Bug 1800538] Re: package grub-pc 2.02-2ubuntu8.7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 10

[Marc Deslauriers]

Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Information type changed from Public Security to Public

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Title:
  package grub-pc 2.02-2ubuntu8.7 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 10

Status in grub2 package in Ubuntu:
  New

Bug description:
  sometimes, while system is upgrading, that error message appears:

  package grub-pc 2.02-2ubuntu8.7 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 10

  System: Lubuntu 18.04

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-pc 2.02-2ubuntu8.7
  ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
  Uname: Linux 4.15.0-38-generic i686
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: i386
  Date: Sat Oct 27 19:08:39 2018
  DuplicateSignature:
   package:grub-pc:2.02-2ubuntu8.7
   Setting up grub-pc (2.02-2ubuntu8.7) ...
   dpkg: error processing package grub-pc (--configure):
    installed grub-pc package post-installation script subprocess returned error exit status 10
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 10
  InstallationDate: Installed on 2018-04-16 (196 days ago)
  InstallationMedia: Lubuntu 17.10 "Artful Aardvark" - Release i386 (20180105)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic root=UUID=ef7cafef-3c84-4c8d-8188-ac6fa6134730 ro locale=pt_PT quiet splash vt.handoff=1
  Python3Details: /usr/bin/python3.6, Python 3.6.6, unpackaged
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, unpackaged
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.6
  SourcePackage: grub2
  Title: package grub-pc 2.02-2ubuntu8.7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 10
  UpgradeStatus: Upgraded to bionic on 2018-07-25 (96 days ago)

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