I am using 20.10 and a few days ago I got a message on my update-manager that asked if I wanted the upgrade to 21.04. As I didn't have time then I clicked "remind me again later". Since then offer hasn't reappeared. Has the 20.10 -21.04 upgrade been put on hold?
Edit: There are reports on the internet of a "a broken shim" which is causing some users not to be able to boot their machine after an upgrade from 20.10 to 21.04. I am basically asking if Canonical have put the upgrade on hold and that is why it no longer appears in the update-manager, which is the way I have upgraded for years now.
Edit 2: Following N0rbert's link below I tried starting the update-manager with
and then I do get the offer to upgrade! But is it safe? I have a Clonezilla backup of my machine , and so I might try it when I get time.
Edit 3: the "duplicate" doesn't answer the question I asked. That was the reason for the two edits above. Only by calling the -d (development) option do I get the option to upgrade. Does this mean there is a problem with the supported version of the upgrade?
Edit 4: I decided to bite the bullet and try the development version of 21.04. Before the upgrade I got this message
Welcome to the Ubuntu 'Hirsute Hippo' development release
This release is still in development. An upgrade to it is not recommended on production machines at this time. In particular, if your machine uses an early implementation of EFI it may end up in an unbootable state which would require manual recovery. Upgrades will be recommended when a new version of shim is available.
Thanks for your interest in this development release of Ubuntu. The Ubuntu developers are moving very quickly to bring you the absolute latest and greatest software the Open Source Community has to offer. This development release brings you a taste of the newest features for the next version of Ubuntu.
Let's see what happens.
Well the upgrade seems to have worked. Feel free to remove this question, but maybe wait until the supported upgrade is available.