[Bug 1805490] Re: Grub2 Failed to install "efibootmgr failed to register the boot entry: Block device required."

[Mathieu Trudel-Lapierre]

I'm unable to reproduce this. I've tried upgrading from bionic to
cosmic, or various partitioning set ups. Clearly there is something
special about some set up that can cause this kind of issue, but I'm
unsure what it could be.

Could you please tell us more about how your system was installed that
could help reproducing the bug?

 - Is it upgraded from previous releases before the bionic -> cosmic upgrade? 
 - Is there a special partitioning done?
 - Is "CSM" enabled in the BIOS with the UEFI mode?
 - Is there anything else you can say about the affected systems that could help us reproduce the issue?

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https://bugs.launchpad.net/bugs/1805490

Title:
  Grub2 Failed to install "efibootmgr failed to register the boot entry:
  Block device required."

Status in grub2-signed package in Ubuntu:
  Incomplete

Bug description:
  package grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9
  ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
  Uname: Linux 4.15.0-38-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  Date: Tue Nov 27 10:35:08 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-05-12 (199 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2.1
   apt  1.6.6
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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