Downgrade from 22.04 to 21.10

Question

It seems that Qt 6.3 and some PHP plugins are not usable under Ubuntu 22.04. Is there a way to downgrade to 21.10 (where I came from) ?

I searched in the Update manager but I found nothing about. Looking on the Internet most of sources just suggest to reinstall everything from scratch.

But I don't think there is no way just to undo an upgrade!

Answer 1

There is no such thing unless you created it yourself (ie. made a full system backup).

The current options are:

• Either fix the issue yourself, file a bugreport and wait for a fix. A fix could be to install an older QT in 22.04 How to install/use older version of Qt points to a list of older versions. how to install or revert to an older version of Qt? is a bit more informative.
• Install 21.10.

A suggestion: when installing create a post install script with all your manual alterations (installing, removing software, changed gconf settings, make a backup osf file you edit to a safe location so you can copy it back into the system) so you can execute this script after every install. One time a bit of work but very useful in the long run.