Comment 2 for bug 2038251

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Bug reporting is about finding & fixing problems thus preventing future users from hitting the same bug.

I suspect a Support site would be more appropriate, 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

Ubuntu 22.10 and the 5.19 kernel are now using a revoked SHIM/key, the upgraded key would have been on your system prior to revocation if you'd performed the release-upgrade prior to EOL; the delay may have complicated your issues, and support maybe your fix.

https://help.ubuntu.com/community/EOLUpgrades