Update:
The upgrade to Ubuntu 24.04 LTS from Ubuntu 22.04 LTS is disabled due to a critical bug discovered in the ubuntu-release-upgrader component, specifically in how it interacts with the APT package management system.
I was fortunate to successfully upgrade my Ubuntu 22.04 LTS desktop to Ubuntu 24.04 LTS a few days ago without any issues. However, it appears that not everyone has been as lucky.
If you attempt to upgrade to Ubuntu 24.04 now, you will see a message indicating that no upgrades are currently available for the LTS release.
Table of Contents
The issue
The bug in the ubuntu-release-upgrader component prevents users from upgrading to Ubuntu 24.04. Users attempting the upgrade using do-release-upgrade are met with a message stating "There is no development version of an LTS available" even with the correct settings.
This isn’t the first time upgrades to Ubuntu 24.04 have caused issues. When Ubuntu 24.04 LTS was released in April, users running Ubuntu 23.10 were initially able to upgrade, but were later advised against it due to critical bugs.
Timeline
The upgrade option was available between August 29th and September 2nd, 2024, but has since been removed. The issue was reported as a bug (#2078895) on September 4th, 2024.
Cause
The bug lies in the ubuntu-release-upgrader package, and affects its ability to utilize the APT solver, an important component for managing package dependencies during upgrades.
Resolution
Canonical is actively working on resolving this issue. Once fixed, they plan to re-enable the upgrade path to Ubuntu 24.04. An official announcement is also in progress to keep users informed.
In the meantime, users are advised to wait for the official fix and announcement from Canonical. Using workarounds or manual upgrade methods is not recommended and could lead to system instability.
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