The upgrade has left the recorded Ubuntu version unchanged

Asked by Norman Gregory on 2019-07-24

The upgrade was said to be from Ubuntu 18 to Ubuntu 20.

During the Upgrade the screensaver changed and I assumed that all was well. Today I was prompted to backup and found that my normal automatic back up was not working and needed to be changed from disk to Google cloud.

Trying to avoid this I got lost but found that the System summary was still showing Ubuntu 18.
I am now being prompted to upgrade to Ubuntu 19.

Is it safe to attempt to upgrade to 19 ??

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: ubuntu-release-upgrader-core 1:
ProcVersionSignature: Ubuntu 4.18.0-25.26-generic 4.18.20
Uname: Linux 4.18.0-25-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.4
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 24 16:07:30 2019
InstallationDate: Installed on 2019-02-22 (151 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
 PATH=(custom, no user)
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to cosmic on 2019-07-17 (7 days ago)

mtime.conffile..etc.update-manager.release-upgrades: 2019-07-24T10:30:20.864020

Question information

English Edit question
Ubuntu ubuntu-release-upgrader Edit question
No assignee Edit question
Solved by:
Manfred Hampl
Last query:
Last reply:
Brian Murray (brian-murray) said : #1

Thank you for taking the time to report this issue and helping to make Ubuntu better. Examining the information you have given us, this does not appear to be a bug report so we are closing it and converting it to a question in the support tracker. We understand the difficulties you are facing, but it is better to raise problems you are having in the support tracker at if you are uncertain if they are bugs. You can also find help posting your problem in the support forum of your local Ubuntu's community or asking at For help on reporting bugs, see

Best Manfred Hampl (m-hampl) said : #2

There is no "Ubuntu 18", "Ubuntu 19" or "Ubuntu 20".

All Ubuntu release numbers consist of two pairs of digits YY.MM, denoting the year and month (either April or October) of publication. Eventually there is a third "dot number" appended.

See and

The highest existing release number (the current development release) is 19.10.
Release numbers with 20 ("Ubuntu 20") have never existed so far. I have no idea what kind of upgrade this should have been.

Your output shows that you are running Ubuntu 18.10.
Support for Ubuntu 18.10 has ended a few weeks ago, and you definitely should upgrade to a supported release (in your case Ubuntu 19.04)

Re: it safe to attempt to upgrade?
It is NOT safe to stay on this unsupported release.

Norman Gregory (norman-l) said : #3

Thank you Manfred.
Your explanation of the release numbering is interesting and helpful.

I seem to have wasted other peoples time and do apologise for this but I am totally baffled by what has happened.
My attempted upgrade was in response to an e-mailed (or web) message and I simply clicked a box to let it proceed. A name for the new version was given; my somewhat addled memory of this was something like 'Crasey Crayfish It did make changes, most obviously to the screensaver. It also blocked my long-standing automatic backup by switching the destination from a plugin Goflex disk towards Google Cloud.

I have now upgraded to Ubuntu 19.04, as recommended, and recommenced regular backups.