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The upgrade is not currently open, to avoid systems upgrading and failing to boot post-upgrade due to bug. If you read the release notes - Kubuntu 21.04 release notes - https://wiki.ubuntu.com/HirsuteHippo/ReleaseNotes/Kubuntu and especially the main release notes Ubuntu 21.04 release notes - https://discourse.ubuntu.com/t/hirsute-hippo-release-notes/19221 you'll note "Upgrades from Ubuntu 20.10 to Ubuntu 21.04 are not enabled as it is possible for some systems to end up in an unbootable state if they use EFI version 1.10 - bug 1925010. Release upgrades will be enabled once an updated version of shim is available which is compatible with EFI version 1.10." This applies to all flavors including Kubuntu. I'll refer you to a couple of askubuntu answers I wrote - https://askubuntu.com/questions/1333226/how-can-i-update-to-ubuntu-21-04/1333229#1333229 - https://askubuntu.com/questions/1338429/ubuntu-21-04-update-available-then-disappears/1338851#1338851 You'll note the upgrades look in the file located at https://changelogs.ubuntu.com/meta-release which currently does not have the 20.10 upgrade to 21.04 as open; thus the upgrade should not work unless forced (if forced it'll use https://changelogs.ubuntu.com/meta- release-development instead). I suggest you seek out support for help. eg. https://answers.launchpad.net/ubuntu. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community-support/709 I've marked this bug incomplete; if you believe I'm in error, please leave a comment explaining why, and you can change the status back to "New". ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1930369 Title: Kubuntu 20.10 does not offer release upgrade to 21.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1930369/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
