[Bug 1902675] Re: package shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2 failed to install/upgrade: dependency problems - leaving triggers unprocessed

[Steve Langasek]

The error in your log is:

Setting up grub-efi-amd64-signed (1.142.8+2.04-1ubuntu26.6) ...
/boot/vmlinuz-5.8.10 is unsigned.
E: Your kernels are not signed with a key known to your firmware. This system will fail to boot in a Secure Boot environment.
dpkg: error processing package grub-efi-amd64-signed (--configure):
 installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

This is not a bug in shim-signed, the package deliberately refuses to
upgrade informing you that upgrading will render your system unbootable.

/boot/vmlinuz-5.8.10 is not an official Ubuntu kernel, which means that
with recent versions of shim which enforce kernel signatures, your
system will fail to boot.

You need to either disable SecureBoot in your firmware, or use a signed
kernel.

** Changed in: shim-signed (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1902675

Title:
  package shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2 failed to
  install/upgrade: dependency problems - leaving triggers unprocessed

Status in shim-signed package in Ubuntu:
  Invalid

Bug description:
  This bug started when i tried to install an Opencv package called
  "opencv2/nonfree/nonfree.hpp" for C++. I tried installing following
  the package following the steps in the answer in this thread
  "https://stackoverflow.com/questions/28525810/fatal-error-
  opencv2-nonfree-nonfree-hpp-no-such-file-or-directory". I have Opencv
  version 4.2 installed.

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2
  ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
  Uname: Linux 5.4.0-48-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.11-0ubuntu27.10
  Architecture: amd64
  BootEFIContents:
   BOOTX64.CSV
   grub.cfg
   grubx64.efi
   mmx64.efi
   shimx64.efi
  CasperMD5CheckResult: skip
  Date: Mon Nov  2 16:16:53 2020
  ErrorMessage: dependency problems - leaving triggers unprocessed
  InstallationDate: Installed on 2020-09-22 (41 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SecureBoot: 6   0   0   0   1
  SourcePackage: shim-signed
  Title: package shim-signed 1.40.4+15+1552672080.a4a1fbe-0ubuntu2 failed to install/upgrade: dependency problems - leaving triggers unprocessed
  UpgradeStatus: No upgrade log present (probably fresh install)

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