[Bug 1798183] Re: package grub-efi-amd64-signed 1.93.7+2.02-2ubuntu8.6 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Sebastien Bacher]

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

** This bug has been marked a duplicate of bug 1805490
   Grub2 Failed to install "efibootmgr failed to register the boot entry: Block device required."

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Title:
  package grub-efi-amd64-signed 1.93.7+2.02-2ubuntu8.6 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:
  Adding boot menu entry for EFI firmware configuration
  done
  Setting up grub-efi-amd64-signed (1.93.7+2.02-2ubuntu8.6) ...
  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
  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.
                              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 1.93.7+2.02-2ubuntu8.6
  ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
  Uname: Linux 4.15.0-36-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  Date: Tue Oct 16 15:01:53 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2016-09-05 (771 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  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-signed
  Title: package grub-efi-amd64-signed 1.93.7+2.02-2ubuntu8.6 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-09-12 (34 days ago)

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