Public bug reported: I reinstalled ubuntu 18.04 in which I used a partition that was used by OpenSuse before. After installation of Ubuntu I performed the first update when a system problem was mentioned for which this error report was made.
ProblemType: Package DistroRelease: Ubuntu 18.04 Package: grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 Date: Thu Aug 22 14:34:02 2019 DuplicateSignature: package:grub-efi-amd64-signed:1.93.14+2.02-2ubuntu8.13 Setting up grub-efi-amd64-signed (1.93.14+2.02-2ubuntu8.13) ... dpkg: error processing package grub-efi-amd64-signed (--configure): installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255 ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255 InstallationDate: Installed on 2019-08-20 (1 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) Python3Details: /usr/bin/python3.6, Python 3.6.8, python3-minimal, 3.6.7-1~18.04 PythonDetails: N/A RelatedPackageVersions: dpkg 1.19.0.5ubuntu2 apt 1.6.11 SourcePackage: grub2-signed Title: package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 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) ** Affects: grub2-signed (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package bionic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1841054 Title: package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 failed to install/upgrade: installed grub-efi-amd64-signed package post- installation script subprocess returned error exit status 255 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1841054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs