[Bug 1768695] Re: package shim-signed 1.34.9+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1

[Steve Langasek]

The errors in your log show that the installer detected UEFI support at
install time and tried to install the UEFI GRUB bootloader, which
failed.  There is no information in the log which explains why it failed
at this point.  The attached autogenerated information confirms that you
were booted in BIOS mode when the report was filed.

You should remove the shim-signed and grub-efi-amd64-bin packages from
your system.  They are not installable on a system not booted in UEFI
mode.

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

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Title:
  package shim-signed 1.34.9+13-0ubuntu2 failed to install/upgrade:
  installed shim-signed package post-installation script subprocess
  returned error exit status 1

Status in shim-signed package in Ubuntu:
  Invalid

Bug description:
  Report details:
  when I upgrade from 16.04 LTS to 18.04 LTS at May 2, 2018 with the following commands:
      1. sudo apt update
      2. sudo apt upgrade
      3. sudo apt dist-upgrade
      4. sudo apt install update-manager-core
      5. sudo do-release-upgrade -d

  I met the lots of dependencies broken errors, and then I try to use a commond to fix the errors following:
      1. sudo apt-get install -f
  it's doesn't work.

  So I try to reinstall the 18.04 LTS with USB IOS method, there is an
  issues at install grub2 processing, there is a message popped up and
  can't close it, so I power off and reboot manually.

  The previous grub2 still works, I choose the first ubuntu option and login the 18.04 LTS system.
  Finally crashed report popped up and I submit this report.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: shim-signed 1.34.9+13-0ubuntu2
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  .proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
  ApportVersion: 2.20.9-0ubuntu7
  AptOrdering:
   shim:amd64: Install
   shim-signed:amd64: Install
   NULL: ConfigurePending
  Architecture: amd64
  BootEFIContents:
   fw
   fwupx64.efi
  Date: Thu May  3 09:17:36 2018
  EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: EFI variables are not supported on this system.
  EFITables: 5月 03 09:28:44 qixin fwupd[3028]: disabling plugin because: failed to startup uefi: UEFI firmware updating not supported
  ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.1
  SourcePackage: shim-signed
  Title: package shim-signed 1.34.9+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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