We all have been waiting for the 22.04 version release. The April 21, 2022 is here. It seems the wait is finally over. Not quite!
Don't try to upgrade the day Ubuntu 22.04 is released
Just wait a week or two. Eventually when you open the Software Updater app, it will prompt you to upgrade. Big upgrades like this are rolled out in stages, so that everyone does not try to upgrade at the same time and overload and crash the download servers.
For upgrade from 20.04 to 22.04
The wait is not over yet. LTS release upgrade prompt won't appear until a few weeks after the version 22.04.1 is released in August 2022.
The 22.04 Release Notes have been updated to highlight why standard release upgrades have not been enabled yet:
Upgrading from Ubuntu 21.10
Upgrades to 22.04 LTS are currently not enabled (due [to] a bug with snapd and update-notifier) but will be in the next couple of days.
One imagines the bug is LP#1969162. After a fix is released, be patient. Mirrors need to update. Since it's a bug in 21.10, Phased Updates means some folks won't see it for up to one week. At some point soon, they will make release-upgrades available to 21.10 users.
Note that 20.04 users are different. You won't see a release-upgrade prompt until August 2022, matching a first point release of 22.04. 20.04 users don't have this bug; the three-month delay for 22.04 to stabilize has been a normal element of LTS-to-LTS release-upgrades for over a decade.
Upgrade after 2weeks from now.
Ubuntu 22.04 is still in development phrase. Which means in-case you go ahead to upgrade this might result to lots of bugs and inconsistencies.
For those who want to contribute to solving and identifying bugs, you can upgrade via: where -d implies development.
NOTE:
To the moderators: I have removed the replies to other answers in my post.
I have noticed that my previous answer has been deleted as it was thought to be an upgrading process from 20.04 to 22.04, hence appears not to answer the question. I would like to clarify, that this method works for upgrading from 21.10 to 22.04 as well, and is not specific to 20.04 or upgrading from LTS releases. I have tested it on my machine running 21.10, and an upgrade to 22.04 was successful. Thank you.
Change URI = https://changelogs.ubuntu.com/meta-release to URI = https://raw.githubusercontent.com/czlucius/ubuntu-upgrade-jammy/main/meta_release_jammy(or your hosted URL) with an editor such as nano.
Run do-release-upgrade again, and this time it will pick up the new update of 22.04 and apply it to your system. This will install the production build, and not the development one.
You can use this method to update from 21.10 to 22.04.
Note that when you have completed the upgrade, do not forget to change the URL back.
We all have been waiting for the 22.04 version release. The April 21, 2022 is here. It seems the wait is finally over. Not quite!
Don't try to upgrade the day Ubuntu 22.04 is released
Just wait a week or two. Eventually when you open the Software Updater app, it will prompt you to upgrade. Big upgrades like this are rolled out in stages, so that everyone does not try to upgrade at the same time and overload and crash the download servers.
For upgrade from 20.04 to 22.04
The wait is not over yet. LTS release upgrade prompt won't appear until a few weeks after the version 22.04.1 is released in August 2022.
Hope this helps
The 22.04 Release Notes have been updated to highlight why standard release upgrades have not been enabled yet:
One imagines the bug is LP#1969162. After a fix is released, be patient. Mirrors need to update. Since it's a bug in 21.10, Phased Updates means some folks won't see it for up to one week. At some point soon, they will make release-upgrades available to 21.10 users.
Then make sure you have the update-manager-core package installed.
After that, run the following command to begin the upgrade process.
Then follow the on-screen instruction to upgrade to Ubuntu 22.04.
I found this here. You can also use this process for other Ubuntu 20.04 LTS. https://itsubuntu.com/how-to-upgrade-ubuntu-22-04-lts/
Upgrade after 2weeks from now. Ubuntu 22.04 is still in development phrase. Which means in-case you go ahead to upgrade this might result to lots of bugs and inconsistencies.
For those who want to contribute to solving and identifying bugs, you can upgrade via: where -d implies development.
NOTE: To the moderators: I have removed the replies to other answers in my post.
I have noticed that my previous answer has been deleted as it was thought to be an upgrading process from 20.04 to 22.04, hence appears not to answer the question. I would like to clarify, that this method works for upgrading from 21.10 to 22.04 as well, and is not specific to 20.04 or upgrading from LTS releases. I have tested it on my machine running 21.10, and an upgrade to 22.04 was successful. Thank you.
This is caused by a lack of an entry in the changelogs for Jammy 22.04 (here https://changelogs.ubuntu.com/meta-release). However, a slight modification of the
impish
URL for release notes will reveal that Jammy has a stable release available for download, albeit not registered yet in the changelogs (http://archive.ubuntu.com/ubuntu/dists/jammy/main/dist-upgrader-all/current/ReleaseAnnouncement.html).From editing the
impish
changelog, we can get this:The file
/etc/update-manager/meta-release
stores all the URLs to be queried for new releases bydo-release-upgrade
.We can host a file like this https://github.com/czlucius/ubuntu-upgrade-jammy/blob/main/meta_release_jammy (which is the changelogs on the official website + the 22.04 update) on a public server (you can also host it on GitHub). Feel free to use the one I've hosted here: https://raw.githubusercontent.com/czlucius/ubuntu-upgrade-jammy/main/meta_release_jammy.
Change
URI = https://changelogs.ubuntu.com/meta-release
toURI = https://raw.githubusercontent.com/czlucius/ubuntu-upgrade-jammy/main/meta_release_jammy
(or your hosted URL) with an editor such asnano
.Run
do-release-upgrade
again, and this time it will pick up the new update of 22.04 and apply it to your system. This will install the production build, and not the development one.You can use this method to update from 21.10 to 22.04.
Note that when you have completed the upgrade, do not forget to change the URL back.
More info: https://github.com/czlucius/ubuntu-upgrade-jammy/ (Disclaimer: this is my GitHub repo)
Thanks for reading!
I was trying to update from the Brazil server without a success. Many different errors (connection failed, unsupported repositories...).
I changed to an United States server (Software and Updates >> Donwload from >> Server from United States) and was successful.