Public bug reported: System reported an error, so this is what I'm doing.
ProblemType: Package DistroRelease: Ubuntu 18.04 Package: grub-efi-amd64 2.02-2ubuntu8.15 ProcVersionSignature: Ubuntu 4.4.0-137.163-generic 4.4.144 Uname: Linux 4.4.0-137-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.18 Architecture: amd64 Date: Sun Apr 26 15:42:39 2020 DuplicateSignature: package:grub-efi-amd64:2.02-2ubuntu8.15 Setting up grub-efi-amd64 (2.02-2ubuntu8.15) ... dpkg: error processing package grub-efi-amd64 (--configure): subprocess installed post-installation script returned error exit status 255 ErrorMessage: subprocess installed post-installation script returned error exit status 255 InstallationDate: Installed on 2016-09-25 (1309 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-137-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 RelatedPackageVersions: dpkg 1.18.4ubuntu1.4 apt 1.2.27 SourcePackage: grub2 Title: package grub-efi-amd64 2.02-2ubuntu8.15 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255 UpgradeStatus: Upgraded to bionic on 2018-12-21 (492 days ago) ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package bionic third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875332 Title: package grub-efi-amd64 2.02-2ubuntu8.15 failed to install/upgrade: subprocess installed post-installation script returned error exit status 255 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1875332/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs