[Bug 1888067] Re: package grub-efi-amd64-signed 1.142.1+2.04-1ubuntu26 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255

[Ubuntu Foundations Team Bug Bot]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.  Reviewing your dmesg attachment in this bug report it
seems that there is a problem with your hardware.  I recommend
performing a back up and then investigating the situation.  Measures you
might take include checking cable connections and using software tools
to investigate the health of your hardware.  In the event that is is not
in fact an error with your hardware please set the bug's status back to
New.  Thanks and good luck!

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inappropriately; please just reply to this message indicating so.]

** Tags added: hardware-error

** Changed in: grub2-signed (Ubuntu)
   Importance: Undecided => Low

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

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https://bugs.launchpad.net/bugs/1888067

Title:
  package grub-efi-amd64-signed 1.142.1+2.04-1ubuntu26 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:
  Invalid

Bug description:
  Dont know

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: grub-efi-amd64-signed 1.142.1+2.04-1ubuntu26
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Sat Jul 18 20:01:31 2020
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
  InstallationDate: Installed on 2020-04-01 (108 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.142.1+2.04-1ubuntu26 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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