package grub-pc 2.02-2ubuntu8.23 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 128

[Robert L. Myers I]

Will not install lot of Errors

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: grub-pc 2.02-2ubuntu8.23
ProcVersionSignature: Ubuntu 4.15.0-20.21-lowlatency 4.15.17
Uname: Linux 4.15.0-20-lowlatency x86_64
ApportVersion: 2.20.9-0ubuntu7.24
Architecture: amd64
Date: Sun Sep 5 17:31:38 2021
ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 128
InstallationDate: Installed on 2021-09-05 (0 days ago)
InstallationMedia: Ubuntu-Studio 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-lowlatency root=UUID=e145df4e-789e-4e5d-b1c9-deb42ad7accb ro access=v1 quiet splash vt.handoff=1
Python3Details: /usr/bin/python3.6, Python 3.6.9, python3-minimal, 3.6.7-1~18.04
PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.3
 apt 1.6.14
SourcePackage: grub2
Title: package grub-pc 2.02-2ubuntu8.23 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 128
UpgradeStatus: No upgrade log present (probably fresh install)

[Steve Beattie (sbeattie)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.