Ubuntu Version
Ubuntu 24.04 LTS Flavors
Desktop Environment (if applicable)
XFCE
Problem Description
When running do-release-upgrade on an ubuntu based distribution, it fails with
“An unresolvable problem occurred while calculating the upgrade.”(see terminal output) I have backups and I don’t mind minor breaking things (like themes breaking etc.)
do-release-upgrade has worked fine (with minimal adjusting) previously when doing upgrade from 22.04LTS to 24.04 LTS.
Relevant System Information
Currently on 24.04 LTS, trying to upgrade to 26.04 LTS.
8GB of RAM, plenty of hdd storage and dedicated /boot partition (that has over 1GB of free storage).
The distribution is called “Linux Lite” and due to being beginner friendly they don’t provide support for release upgrades and instructs to re-install the OS.
Error Messages / Logs
The terminal output
Checking for a new Ubuntu release
= Welcome to Ubuntu 26.04 LTS 'Resolute Raccoon' =
The Ubuntu team is proud to announce Ubuntu 26.04 LTS 'Resolute Raccoon'.
To see what's new in this release, visit:
https://documentation.ubuntu.com/release-notes/26.04/
Ubuntu is a Linux distribution for your desktop or server. It is fast
and easy to install, it has regular releases, a tight selection of
excellent applications installed by default, and almost any other
software you can imagine available through the network.
We hope you enjoy Ubuntu.
== Feedback and helping ==
To help shape Ubuntu, look at the list of ways to participate at:
https://documentation.ubuntu.com/project/community/contribute/
Your comments, bug reports, patches, and suggestions help ensure our
next release is the best release of Ubuntu ever. If you found a bug,
please read:
https://help.ubuntu.com/community/ReportingBugs
Then report bugs using apport in Ubuntu. For example:
ubuntu-bug linux
opens a bug report in Launchpad regarding the linux package.
If you have a question, or if you think you may have found a bug but aren't
sure, reach out on one of the communication channels. Matrix is the go-to
for instant chatting, while Discourse is the home to our support forum.
Otherwise, send an email to the Ubuntu Users mailing list:
https://documentation.ubuntu.com/project/community/contributors/matrix/
https://discourse.ubuntu.com/t/welcome-to-support-and-help
https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
== More information ==
You can find out more about Ubuntu on the Ubuntu website and in Ubuntu
Project documentation:
https://ubuntu.com/
https://documentation.ubuntu.com/project/
To sign up for future Ubuntu announcements, subscribe to Ubuntu's very
low-volume announcement list:
https://lists.ubuntu.com/mailman/listinfo/ubuntu-announce
Continue [yN] y
Get:1 Upgrade tool signature [833 B]
Get:2 Upgrade tool [961 kB]
Fetched 962 kB in 0s (0 B/s)
/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcherCore.py:237: Warning: W:Download is performed unsandboxed as root as file 'resolute.tar.gz.gpg' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
result = fetcher.run()
authenticate 'resolute.tar.gz' against 'resolute.tar.gz.gpg'
extracting 'resolute.tar.gz'
Reading cache
Checking package manager
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Hit http://security.ubuntu.com/ubuntu noble-security InRelease
Hit http://archive.canonical.com jammy InRelease
Hit https://repo.radeon.com/amdgpu/30.30/ubuntu noble InRelease
Hit http://archive.ubuntu.com/ubuntu noble InRelease
Hit http://archive.ubuntu.com/ubuntu noble-updates InRelease
Hit https://repo.radeon.com/rocm/apt/7.2 noble InRelease
Hit https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu noble InRelease
Hit http://archive.ubuntu.com/ubuntu noble-backports InRelease
Hit https://repo.linuxliteos.com/linuxlite emerald InRelease
Hit https://repo.radeon.com/graphics/7.2/ubuntu noble InRelease
Fetched 0 B in 0s (0 B/s)
/usr/lib/python3/dist-packages/apt/cache.py:562: Warning: W:http://repo.linuxliteos.com/linuxlite/dists/emerald/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
res = self._cache.update(fetch_progress, slist, pulse_interval)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Checking for installed snaps
Calculating snap size requirements
Updating repository information
Hit http://security.ubuntu.com/ubuntu resolute-security InRelease
Hit http://archive.ubuntu.com/ubuntu resolute InRelease
Hit http://archive.ubuntu.com/ubuntu resolute-updates InRelease
Hit http://archive.ubuntu.com/ubuntu resolute-backports InRelease
Fetched 0 B in 0s (0 B/s)
Checking package manager
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
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
### What I've Tried
I already temporarily uninstalled Rclone and a whiskermenu plugin as advised by the upgrade tool. I have previously tried to upgrade with the -d option, but it failed too (the same way) and I waited for official release.