[Bug 2154657] [NEW] Upgrading to 26.04 fails

[Philippe Laurent]

Public bug reported:

The do-release-upgrade procedure fails after having updated sources and
before having downloaded any package, complaining some of the packages
come from unofficial sources. But removing these packages makes no
difference.

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: ubuntu-release-upgrader-core 1:25.10.8
ProcVersionSignature: Ubuntu 6.17.0-29.29-generic 6.17.13
Uname: Linux 6.17.0-29-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Sun May 31 04:24:42 2026
InstallationDate: Installed on 2022-10-22 (1316 days ago)
InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
PackageArchitecture: all
ProcEnviron:
 LANG=fr_FR.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to questing on 2026-05-31 (0 days ago)

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade questing wayland-session

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https://bugs.launchpad.net/bugs/2154657

Title:
  Upgrading to 26.04 fails

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  The do-release-upgrade procedure fails after having updated sources
  and before having downloaded any package, complaining some of the
  packages come from unofficial sources. But removing these packages
  makes no difference.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: ubuntu-release-upgrader-core 1:25.10.8
  ProcVersionSignature: Ubuntu 6.17.0-29.29-generic 6.17.13
  Uname: Linux 6.17.0-29-generic x86_64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: GNOME
  Date: Sun May 31 04:24:42 2026
  InstallationDate: Installed on 2022-10-22 (1316 days ago)
  InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
  PackageArchitecture: all
  ProcEnviron:
   LANG=fr_FR.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to questing on 2026-05-31 (0 days ago)

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