Public bug reported:
Upgrading the server from oracular 24.10 to plucky 25.04 fails because
do-release-upgrade wrongly believes the system is already upgraded to
plucky.
# uname -a
Linux server 6.11.0-25-generic #25-Ubuntu SMP PREEMPT_DYNAMIC Fri Apr 11
23:29:18 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
# cat /etc/update-manager/release-upgrades
# Default behavior for the release upgrader.
[DEFAULT]
# Default prompting and upgrade behavior, valid options:
#
# never - Never check for, or allow upgrading to, a new release.
# normal - Check to see if a new release is available. If more than one new
# release is found, the release upgrader will attempt to upgrade to
# the supported release that immediately succeeds the
# currently-running release.
# lts - Check to see if a new LTS release is available. The upgrader
# will attempt to upgrade to the first LTS release available after
# the currently-running one. Note that if this option is used and
# the currently-running release is not itself an LTS release the
# upgrader will assume prompt was meant to be normal.
Prompt=normal
# lsb_release -a | grep "Codename" | awk -F ':' '{print $2}'
oracular
# cat /usr/lib/os-release | grep "^UBUNTU_CODENAME" | sed -E
"s|^UBUNTU_CODENAME=(.+)$|\1|g"
oracular
# apt-cache policy ubuntu-release-upgrader-core
ubuntu-release-upgrader-core:
Installed: 1:24.10.14
Candidate: 1:24.10.14
Version table:
*** 1:24.10.14 500
500 https://fr.archive.ubuntu.com/ubuntu oracular-updates/main amd64
Packages
100 /var/lib/dpkg/status
1:24.10.13 500
500 https://fr.archive.ubuntu.com/ubuntu oracular/main amd64 Packages
# do-release-upgrade
Checking for a new Ubuntu release
No new release found.
What is going on?
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2109882
Title:
Cannot upgrade from oracular to plucky: No new release found
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