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

[Kemac]

*** This bug is a duplicate of bug 2037738 ***
    https://bugs.launchpad.net/bugs/2037738

** This bug has been marked a duplicate of bug 2037738
   Broken shim-signed / grub-efi-arm64-signed dependency on Kinetic to Lunar upgrade

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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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