[Bug 1767942] Re: package grub-efi-amd64 2.02-2ubuntu8 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: grub2 (Ubuntu)
       Status: New => Confirmed

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Title:
  package grub-efi-amd64 2.02-2ubuntu8 failed to install/upgrade:
  installed grub-efi-amd64 package post-installation script subprocess
  returned error exit status 1

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  Upgraded from 16.04 to 18.04. When I came back, the login screen for
  18.04 was present, but there was no password field, so I had to ctrl +
  alt + f1 and ran the command "nohup unity --replace &" to login.

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64 2.02-2ubuntu8
  ProcVersionSignature: Ubuntu 4.13.0-37.42~16.04.1-generic 4.13.13
  Uname: Linux 4.13.0-37-generic x86_64
  NonfreeKernelModules: bbswitch nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  Date: Mon Apr 30 08:30:55 2018
  ErrorMessage: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2018-03-19 (41 days ago)
  InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-37-generic.efi.signed root=UUID=df5f2d3d-82b4-4718-8489-3f20c09de83e ro quiet splash
  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: grub2
  Title: package grub-efi-amd64 2.02-2ubuntu8 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-04-30 (0 days ago)

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