[Bug 1687181] Re: package grub-efi-amd64 2.02~beta2-36ubuntu3.9 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[Phillip Susi]

You edited your /etc/default/grub file and modified this line
incorrectly:

GRUB DEFAULT=2

There must be an underscore ( _ ), not a space between GRUB and DEFAULT.


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

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Title:
  package grub-efi-amd64 2.02~beta2-36ubuntu3.9 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 127

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  during 'sudo apt-get upgrade'

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-efi-amd64 2.02~beta2-36ubuntu3.9
  ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
  Uname: Linux 4.4.0-45-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  Date: Sat Apr 29 11:26:46 2017
  DuplicateSignature:
   package:grub-efi-amd64:2.02~beta2-36ubuntu3.9
   Setting up grub-efi-amd64 (2.02~beta2-36ubuntu3.9) ...
   /var/lib/dpkg/info/grub-efi-amd64.config: 6: /etc/default/grub: GRUB: not found
   dpkg: error processing package grub-efi-amd64 (--configure):
    subprocess installed post-installation script returned error exit status 127
  ErrorMessage: subprocess installed post-installation script returned error exit status 127
  InstallationDate: Installed on 2016-10-30 (180 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  InvalidGrubScript: /etc/default/grub
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-45-generic.efi.signed root=UUID=57364b06-7261-4097-8bd4-94a56d035205 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.20
  SourcePackage: grub2
  Title: package grub-efi-amd64 2.02~beta2-36ubuntu3.9 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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