[Bug 1787692] Re: package grub-efi-amd64-signed 1.93.4+2.02-2ubuntu8.3 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Fred Palmer]

May be related to this bug.
https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1753518

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https://bugs.launchpad.net/bugs/1787692

Title:
  package grub-efi-amd64-signed 1.93.4+2.02-2ubuntu8.3 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  Not able to perform terminal commands.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.4+2.02-2ubuntu8.3
  ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
  Uname: Linux 4.15.0-24-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.3
  Architecture: amd64
  Date: Sat Aug 18 09:51:42 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-01-03 (226 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, 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  1.6.3
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.4+2.02-2ubuntu8.3 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-05-23 (86 days ago)

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