Public bug reported: I'm on a VM from LINUXVMIMAGES.COM.
On upgrading from Ubuntu 18.04 to 20.04 the installation of grub-pc detectedt a different media giving me the option to delect another drive where install grub. Even selecting a drive (correct one) the dialog ask me to proceed without installing grub. This dialog looped through those screens, in the end I used xkill to complete the upgrade. In the end, with "dpkg configure -a" I was able to complete the configuration of grub-pc through the the ncurses dialog. So, seems broken the gui configure dialog. ProblemType: Package DistroRelease: Ubuntu 20.04 Package: grub-pc 2.04-1ubuntu26.8 ProcVersionSignature: Ubuntu 5.4.0-65.73-generic 5.4.78 Uname: Linux 5.4.0-65-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 CasperMD5CheckResult: skip Date: Sat Feb 6 11:24:49 2021 ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 1 InstallationDate: Installed on 2020-10-18 (110 days ago) InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1) ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-65-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash Python3Details: /usr/bin/python3.8, Python 3.8.5, 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 2.0.4 SourcePackage: grub2 Title: package grub-pc 2.04-1ubuntu26.8 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1 UpgradeStatus: Upgraded to focal on 2021-02-06 (0 days ago) ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-package focal ** Summary changed: - On upgrading 18.04 -> 20:04: package grub-pc 2.04-1ubuntu26.8 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1 + On upgrading 18.04 -> 20.04: package grub-pc 2.04-1ubuntu26.8 failed to install/upgrade: loop on configure dialog -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1914859 Title: On upgrading 18.04 -> 20.04: package grub-pc 2.04-1ubuntu26.8 failed to install/upgrade: loop on configure dialog To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1914859/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs