Public bug reported: Dell XPS 15 9570. Dual boot with Windows 10. Linux was on 18.04 when attempting to upgrade to 20.04. Had previously installed kernel 4.15-0-177 which was rolled back to working kernel 4.15-0-175 due to issues already reported in Bug #1973482. Due to rollback, there was an unsigned image of kernel 4.15-0-177 in the machine, which caused the upgrade 20.04 to fail with following error. Ubuntu upgrade attempted while logged into kernel 4.15-0-175.
package grub-efi-amd64-signed 1.167.2+2.04-1ubuntu44.2 failed to install/upgrade: installed grub-efi-amd64-signed package post- installation script subprocess returned error exit status 1 ProblemType: Package DistroRelease: Ubuntu 20.04 Package: grub-efi-amd64-signed 1.167.2+2.04-1ubuntu44.2 ProcVersionSignature: Ubuntu 5.4.0-110.124-generic 5.4.181 Uname: Linux 5.4.0-110-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 CasperMD5CheckResult: skip Date: Sat May 21 12:24:34 2022 ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 InstallationDate: Installed on 2018-09-23 (1336 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2 PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4 RelatedPackageVersions: dpkg 1.19.7ubuntu3 apt 2.0.8 SourcePackage: grub2-signed Title: package grub-efi-amd64-signed 1.167.2+2.04-1ubuntu44.2 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1 UpgradeStatus: Upgraded to focal on 2022-05-21 (0 days ago) ** Affects: grub2-signed (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package focal 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/1975388 Title: upgrade from 18.04 to 20.04 while on rollbacked kernel 4.15-0-177 - package grub-efi-amd64-signed 1.167.2+2.04-1ubuntu44.2 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/1975388/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs