Public bug reported:
using 'sudo do-release-upgrade'
the upgrade fails at:
-----
Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.
This may be caused by unofficial packages installed on the system.
Please try replacing the following packages with official versions
from the Ubuntu archive, and then try the upgrade again.
kgamma5
Restoring original system state
-----
This upgrade is being attempted on a Microsoft Surface. At one point I
had a PPA for a kernel adapted for MS Surface use. That PPA was removed
well before this upgrade attempt.
To be clear, I am not using unofficial packages for KDE.
Just in case, I attempted to reinstall kgamma5 using:
sudo apt install -reinstall kgamma5
This command runs correctly.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubuntu-release-upgrader-core 1:24.04.29
ProcVersionSignature: Ubuntu 7.0.0-38.38~24.04.4-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
Date: Sat Oct 3 09:46:16 2026
InstallationDate: Installed on 2025-05-06 (515 days ago)
InstallationMedia: Kubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to noble on 2026-10-03 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade noble
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https://bugs.launchpad.net/bugs/2169425
Title:
Unable to update kubuntu 24.04.5 to 26.04.1 - kgamma5?
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