Ubuntu – How to upgrade from Ubuntu 14.04 to Xubuntu 16.04

If your system(14.04) is updated once successfully on or after the date July 24, 2014 your system must have 14.04.1 automatically.

If you didn't, Do the following,

Open terminal(Ctrl+Alt+T)

1) To update type following command in terminal,

$ sudo apt-get update
$ sudo apt-get dist-upgrade 

2) To check it type following command in terminal,

$ lsb_release -a

You will get result as,

Distributor ID: Ubuntu
Description:    Ubuntu 14.04.1 LTS
Release:        14.04
Codename:       trusty

You can try sudo update-manager -d That should get you to where you want You may have to run sudo do-release-upgrade too

As the other post mentioned ... you may have to go into the sources and change it. If you change it to any new version then run the above commands it should show the update. If you choose long term support it may not show. His way may also may also work since he is using the Check if a new Ubuntu release is available .. my method uses Check if upgrading to the latest devel release is possible For some reason sometimes the "new Ubuntu release" doesn't seem to show for me .. so if his method doesn't work you can try mine .. one of them should definitely get the update to show