package grub-efi-amd64-signed 1.142.9+2.04-1ubuntu26.7 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255

[Tomdkat]

Ever since upgrading to Ubuntu 20.04.1 from Ubuntu 18.04.5, this error occurs each time I update the system. The system continues to boot ok (I'm using it now) but this error keeps appearing. I'm not sure how to correct this.

Thanks!

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: grub-efi-amd64-signed 1.142.9+2.04-1ubuntu26.7
ProcVersionSignature: Ubuntu 5.4.0-62.70-generic 5.4.78
Uname: Linux 5.4.0-62-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
AptOrdering:
 dnsmasq-base:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Jan 22 06:35:28 2021
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
InstallationDate: Installed on 2019-06-16 (585 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.2
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.142.9+2.04-1ubuntu26.7 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
UpgradeStatus: Upgraded to focal on 2020-10-05 (109 days ago)

[Tomdkat (tomdkat)]

On Monday, January 25, 2021, I installed some Ubuntu updates that includes a grub update the this same crash happened again. Should I continue to click the "report problem" button, when this happens or is this bug report sufficient?

Thanks!

[Tomdkat (tomdkat)]

This issue keeps happening. Is this something that could possibly be resolved via future Ubuntu update/upgrade or should I re-install Ubuntu 20.04.2 to resolve the grub issue? Despite receiving the error, the system continues to successfully boot.

Thanks!