[Bug 1794519] Re: package grub-pc 2.02-2ubuntu8.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1

[Mate Kukri]

*** This bug is a duplicate of bug 2069726 ***
    https://bugs.launchpad.net/bugs/2069726

** This bug has been marked a duplicate of bug 2069726
   outdated grub2 install failure catch-all

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Title:
  package grub-pc 2.02-2ubuntu8.4 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 1

Status in grub2 package in Ubuntu:
  New

Bug description:
  Don't know.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-pc 2.02-2ubuntu8.4
  ProcVersionSignature: Ubuntu 4.15.0-34.37~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-34-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.3
  Architecture: amd64
  Date: Wed Sep 26 15:09:06 2018
  DeviceMap:
   (hd0) /dev/sda
   (hd1) /dev/sdb
   (hd2) /dev/sdc
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2017-03-13 (561 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic root=UUID=e1ff9825-a556-4d14-8470-22fb7532c8d6 ro quiet splash vt.handoff=7
  Python3Details: /usr/bin/python3.6, Python 3.6.6, python3-minimal, 3.6.5-3ubuntu1
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.3ubuntu0.1
  SourcePackage: grub2
  Title: package grub-pc 2.02-2ubuntu8.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-09-26 (0 days ago)

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