[Bug 1920631] Re: package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 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 1928352 ***
    https://bugs.launchpad.net/bugs/1928352

** This bug is no longer a duplicate of bug 1918070
   package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 
** This bug has been marked a duplicate of bug 1928352
   package shim-signed 1.47+15.4-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1

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https://bugs.launchpad.net/bugs/1920631

Title:
  package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 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:
  occured after installation clear ubuntu

  ProblemType: Package
  DistroRelease: Ubuntu 20.10
  Package: grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4
  ProcVersionSignature: Ubuntu 5.8.0-45.51-generic 5.8.18
  Uname: Linux 5.8.0-45-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Sat Mar 20 19:49:48 2021
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2021-03-20 (0 days ago)
  InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.20.5ubuntu2
   apt  2.1.10
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 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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