Public bug reported: your system has UEFI Secure Boot enabled firmware, and the following kernels present on your system are unassigned:
4.19.0-041900 Generic These kernels cannot be verified Under Secure Boot. ProblemType: Package DistroRelease: Ubuntu 18.04 Package: grub-efi-amd64-signed 1.93.13+2.02-2ubuntu8.12 Uname: Linux 4.19.0-041900-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.6 Architecture: amd64 Date: Sat Mar 16 11:10:01 2019 ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 InstallationDate: Installed on 2018-10-26 (141 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04 PythonDetails: N/A RelatedPackageVersions: dpkg 1.19.0.5ubuntu2.1 apt 1.6.8 SourcePackage: grub2-signed Title: package grub-efi-amd64-signed 1.93.13+2.02-2ubuntu8.12 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: grub2-signed (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package bionic need-duplicate-check -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1820399 Title: package grub-efi-amd64-signed 1.93.13+2.02-2ubuntu8.12 failed to install/upgrade: installed grub-efi-amd64-signed package post- installation script subprocess returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2-signed/+bug/1820399/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs