Public bug reported:
I ran
do-release-upgrade -d
to upgrade a system from Kubuntu 26.04 to 26.10.
It fails with:
An unresolvable problem occurred while calculating the upgrade. ␍
It also reports several packages as being "unofficial packages" despite
these being installed from the official Ubuntu repositories.
I've attached a script log of what happens.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: ubuntu-release-upgrader-core 1:26.04.27
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Sat Oct 17 11:29:32 2026
InstallationDate: Installed on 2026-04-26 (174 days ago)
InstallationMedia: Kubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to resolute on 2026-10-17 (0 days ago)
mtime.conffile..etc.update-manager.release-upgrades: 2026-10-17T11:11:37.640260
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade resolute wayland-session
** Attachment added: "script log of what happens"
https://bugs.launchpad.net/bugs/2171288/+attachment/6010031/+files/upgrade-error.log
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https://bugs.launchpad.net/bugs/2171288
Title:
upgrade script fails for Kubuntu 26.04 -> 26.10
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