[Bug 2038251] Re: updating from Ubuntu 22.10 to 23.04 fails (shim-signed broken?)

[Chris Guiver]

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

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https://bugs.launchpad.net/bugs/2038251

Title:
  updating from Ubuntu 22.10 to 23.04 fails (shim-signed broken?)

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I am trying to upgrade to 23.04, either by GUI or command line. I get
  a message that it can't calculate the upgrade, without any
  instructions of diagnosing why.

  I looked at broken packages, and I see that shim-signed is saying that
  it's broken. I've tried reinstalling it, but upgrades still don't
  work.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.10
  Package: ubuntu-release-upgrader-core 1:22.10.8
  ProcVersionSignature: Ubuntu 5.19.0-45.46-generic 5.19.17
  Uname: Linux 5.19.0-45-generic x86_64
  ApportVersion: 2.23.1-0ubuntu3.2
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Oct  2 20:28:52 2023
  InstallationDate: Installed on 2021-10-27 (705 days ago)
  InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to kinetic on 2023-10-03 (0 days ago)

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