package grub-pc 2.04-1ubuntu26.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess was killed by signal (Aborted)

[fbonsignori]

During upgrade to 20.04.1 LTS

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: grub-pc 2.04-1ubuntu26.4
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Sep 29 11:36:43 2020
ErrorMessage: installed grub-pc package post-installation script subprocess was killed by signal (Aborted)
InstallationDate: Installed on 2014-12-16 (2113 days ago)
InstallationMedia: It
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-48-generic root=UUID=55480640-fe44-4897-baa1-6a402bab1c95 ro quiet splash vt.handoff=7
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: grub2
Title: package grub-pc 2.04-1ubuntu26.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess was killed by signal (Aborted)
UpgradeStatus: Upgraded to focal on 2020-09-29 (0 days ago)

[Launchpad Janitor (janitor)]

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