[Bug 1913352] Re: updating system package grub-efi-amd64-signed 1.142.10+2.04-1ubuntu26.8 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: grub2-signed (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1913352

Title:
   updating system package grub-efi-amd64-signed
  1.142.10+2.04-1ubuntu26.8 failed to install/upgrade: installed grub-
  efi-amd64-signed package post-installation script subprocess returned
  error exit status 255

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  Unable to access efi artition

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: grub-efi-amd64-signed 1.142.10+2.04-1ubuntu26.8
  ProcVersionSignature: Ubuntu 5.8.0-38.43~20.04.1-generic 5.8.18
  Uname: Linux 5.8.0-38-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Tue Jan 26 22:57:22 2021
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
  InstallationDate: Installed on 2020-10-02 (116 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.4
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.142.10+2.04-1ubuntu26.8 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
  UpgradeStatus: No upgrade log present (probably fresh install)

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