[Bug 1781367] Re: package grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Steve Langasek]

*** This bug is a duplicate of bug 1805490 ***
    https://bugs.launchpad.net/bugs/1805490

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1805490, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** This bug has been marked a duplicate of bug 1805490
   [master] Grub2 Failed to install "efibootmgr failed to register the boot entry: Block device required. / Could not delete variable: Invalid argument"

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Title:
  package grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1 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:
  New

Bug description:
  Setting up grub-efi-amd64-signed (1.93.2+2.02-2ubuntu8.1) ...
  Installing for x86_64-efi platform.
  Could not delete variable: Invalid argument
  grub-install: error: efibootmgr failed to register the boot entry: Block device required.
  dpkg: error processing package grub-efi-amd64-signed (--configure):
   installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Setting up cups-bsd (2.2.7-1ubuntu2.1) ...
  Setting up libmagick++-6.q16-7:amd64 (8:6.9.7.4+dfsg-16ubuntu6.3) ...
  Setting up libmagickcore-6.q16-3-extra:amd64 (8:6.9.7.4+dfsg-16ubuntu6.3) ...
  Setting up imagemagick (8:6.9.7.4+dfsg-16ubuntu6.3) ...
  Setting up libglx0:amd64 (1.0.0-2ubuntu2.1) ...
  Setting up libimage-magick-perl (8:6.9.7.4+dfsg-16ubuntu6.3) ...
  dpkg: dependency problems prevent configuration of shim-signed:
   shim-signed depends on grub-efi-amd64-signed; however:
    Package grub-efi-amd64-signed is not configured yet.

  dpkg: error processing package shim-signed (--configure):
   dependency problems - leaving unconfigured
  No apport report written because the error message indicates its a followup error from a previous failure.
          Setting up libgl1:amd64 (1.0.0-2ubuntu2.1) ...
  Setting up libmutter-2-0:amd64 (3.28.2-2~ubuntu18.04.1) ...
  Setting up libgl1-mesa-glx:amd64 (18.0.5-0ubuntu0~18.04.1) ...
  Setting up gir1.2-mutter-2:amd64 (3.28.2-2~ubuntu18.04.1) ...
  Setting up mutter (3.28.2-2~ubuntu18.04.1) ...
  Setting up gnome-shell (3.28.2-0ubuntu0.18.04.1) ...
  Setting up gdm3 (3.28.2-0ubuntu1.3) ...
  Processing triggers for libc-bin (2.27-3ubuntu1) ...
  Errors were encountered while processing:
   grub-efi-amd64-signed
   shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1
  ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
  Uname: Linux 4.15.0-24-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  Date: Thu Jul 12 12:11:41 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-05-08 (65 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.2
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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