15

tried

sudo apt update && sudo apt upgrade -y
sudo apt install update-manager-core
sudo do-release-upgrade

Checking for a new Ubuntu release No new release found.

Checking for a new Ubuntu release There is no development version of an LTS available. To upgrade to the latest non-LTS development release set Prompt=normal in /etc/update-manager/release-upgrades.

Alok Kumar
  • 282

4 Answers4

20

Try this command:

sudo do-release-upgrade -d

Maxime
  • 3,254
  • 1
  • 13
  • 4
3

The output is correct. 23.10 is the most recent release of Ubuntu. There is no newer release yet.

About 48 days from today, Ubuntu 24.04 is planned to be released. It is NOT released yet. Until then, it is in development.

24.04 = yy.mm
yy = 24 (2024)
mm = 04 (April)

user535733
  • 68,493
3

The following worked for me when my 23.10 reached EOL:

  1. Edit the source.list file
sudo vi /etc/apt/sources.list

Change "http://archive.ubuntu.com/ubuntu/" to "http://old-releases.ubuntu.com/ubuntu/" in all the sentences.

  1. Try:
sudo apt update
sudo apt upgrade
sudo do-release-upgrade
GonMDK
  • 41
  • 1
0

The repo of current version of Ubuntu 23.10 is :

http://ports.ubuntu.com/ubuntu-ports

replace it with http://old-releases.ubuntu.com/ubuntu in file /etc/apt/sources.list

that allows to update all installed packages to latest before doing do-release-upgrade

hendergassler
  • 1