[Bug 2146617] [NEW] update from 24.04 could not start

[Rumen Staykov]

Public bug reported:

An unresolvable problem occurred while calculating the upgrade.

If none of this applies, then please report this bug using the 
command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If 
you want to investigate this yourself the log files in 
'/var/log/dist-upgrade' will contain details about the upgrade. 
Specifically, look at 'main.log' and 'apt.log'.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubuntu-release-upgrader-core 1:24.04.28
ProcVersionSignature: Ubuntu 6.17.0-19.19~24.04.2-generic 6.17.13
Uname: Linux 6.17.0-19-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CrashReports:
 640:1001:109:2092082:2026-03-22 08:47:29.067920448 +0200:2026-03-22 08:47:25.713489350 +0200:/var/crash/_usr_lib_firefox_crashreporter.1001.crash
 640:1000:109:8667291:2026-03-18 20:12:48.948512330 +0200:2026-03-18 20:12:46.262312630 +0200:/var/crash/_usr_bin_convert-im6.q16.1000.crash
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 28 10:22:17 2026
EcryptfsInUse: Yes
InstallationDate: Installed on 2025-03-13 (379 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
PackageArchitecture: all
ProcEnviron:
 LANG=bg_BG.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to noble on 2026-03-28 (0 days ago)
VarLogDistupgradeAptHistorylog:
 Start-Date: 2026-03-28  10:13:19
 Requested-By: rumen (1000)
 End-Date: 2026-03-28  10:13:20
VarLogDistupgradeApttermlog:
 Log started: 2026-03-28  10:13:19
 Log ended: 2026-03-28  10:13:20

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


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

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https://bugs.launchpad.net/bugs/2146617

Title:
  update from 24.04 could not start

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

Bug description:
  An unresolvable problem occurred while calculating the upgrade.

  If none of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If 
  you want to investigate this yourself the log files in 
  '/var/log/dist-upgrade' will contain details about the upgrade. 
  Specifically, look at 'main.log' and 'apt.log'.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: ubuntu-release-upgrader-core 1:24.04.28
  ProcVersionSignature: Ubuntu 6.17.0-19.19~24.04.2-generic 6.17.13
  Uname: Linux 6.17.0-19-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.8
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CrashReports:
   640:1001:109:2092082:2026-03-22 08:47:29.067920448 +0200:2026-03-22 08:47:25.713489350 +0200:/var/crash/_usr_lib_firefox_crashreporter.1001.crash
   640:1000:109:8667291:2026-03-18 20:12:48.948512330 +0200:2026-03-18 20:12:46.262312630 +0200:/var/crash/_usr_bin_convert-im6.q16.1000.crash
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Mar 28 10:22:17 2026
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2025-03-13 (379 days ago)
  InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
  PackageArchitecture: all
  ProcEnviron:
   LANG=bg_BG.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to noble on 2026-03-28 (0 days ago)
  VarLogDistupgradeAptHistorylog:
   Start-Date: 2026-03-28  10:13:19
   Requested-By: rumen (1000)
   End-Date: 2026-03-28  10:13:20
  VarLogDistupgradeApttermlog:
   Log started: 2026-03-28  10:13:19
   Log ended: 2026-03-28  10:13:20

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