Thank you Brian for getting back. The problem was indeed that /boot was full - after cleaning it up manually the upgrade went through. Since I know that /boot is a problem with updates, I did clean it before doing the upgrade, but apparently not enough.
The installation was done long ago (7 years according to the status dump) and I think it was from a bootable USB stick with online download of packages. I've never made a reinstall for these years - just upgraded multiple times. To me, this problem is solved and it the ticket can be closed. When I looked it up I found multiple similar bug reports, but for older versions. So I did send in the auto-report to inform that it occurs in this version too and hope it could help with clues on what causes the crash to the upgrade. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1956831 Title: package initramfs-tools 0.136ubuntu6.6 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1 Status in initramfs-tools package in Ubuntu: Incomplete Bug description: Happened during do-release-upgrade. ProblemType: Package DistroRelease: Ubuntu 20.04 Package: initramfs-tools 0.136ubuntu6.6 ProcVersionSignature: Ubuntu 4.15.0-166.174-generic 4.15.18 Uname: Linux 4.15.0-166-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 CasperMD5CheckResult: skip Date: Sat Jan 8 18:54:36 2022 ErrorMessage: installed initramfs-tools package post-installation script subprocess returned error exit status 1 InstallationDate: Installed on 2015-10-04 (2288 days ago) InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all 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 2.0.6 SourcePackage: initramfs-tools Title: package initramfs-tools 0.136ubuntu6.6 failed to install/upgrade: installed initramfs-tools package post-installation script subprocess returned error exit status 1 UpgradeStatus: Upgraded to focal on 2022-01-08 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1956831/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
