Public bug reported:
do-release-upgrade fails to continue to upgrade from Ubuntu 25.04 to
25.10
Continue [yN] y
Get:1 Upgrade tool signature [833 B]
Get:2 Upgrade tool [944 kB]
Fetched 944 kB in 0s (0 B/s)
/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcherCore.py:180:
Warning: W:Download is performed unsandboxed as root as file
'questing.tar.gz.gpg' couldn't be accessed by user '_apt'. - pkgAcquire::Run
(13: Permission denied)
result = fetcher.run()
authenticate 'questing.tar.gz' against 'questing.tar.gz.gpg'
extracting 'questing.tar.gz'
...
...
...
Calculating the changes
Calculating the changes
Could not calculate the upgrade
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'.
Restoring original system state
Aborting
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: ubuntu-release-upgrader-core 1:25.04.18
ProcVersionSignature: Ubuntu 6.14.0-35.35-generic 6.14.11
Uname: Linux 6.14.0-35-generic x86_64
ApportVersion: 2.32.0-0ubuntu5.3
Architecture: amd64
CasperMD5CheckResult: pass
CrashDB: ubuntu
CrashReports:
600:0:123:291737:2025-10-31 20:15:45.767676051 -0700:2025-10-31
20:16:15.535022526 -0700:/var/crash/libc6.0.crash
600:0:123:1952786:2025-10-31 20:41:37.107538377 -0700:2025-10-31
20:41:37.098538209 -0700:/var/crash/apt-edsp.0.crash
CurrentDesktop: ubuntu:GNOME
Date: Sun Nov 2 01:45:29 2025
InstallationDate: Installed on 2022-03-31 (1311 days ago)
InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
PackageArchitecture: all
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to plucky on 2025-11-02 (0 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade plucky
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https://bugs.launchpad.net/bugs/2130511
Title:
do-release-upgrade fails to continue to upgrade from Ubuntu 25.04 to
25.10
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