[Bug 1731450] Re: package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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https://bugs.launchpad.net/bugs/1731450

Title:
  package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  After a start of the uninstall the chrome came the error message.

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6
  ProcVersionSignature: Ubuntu 4.4.0-51.72-generic 4.4.30
  Uname: Linux 4.4.0-51-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  Date: Fri Nov 10 10:39:30 2017
  DuplicateSignature:
   package:grub-efi-amd64-signed:1.66.6+2.02~beta2-36ubuntu3.6
   Setting up grub-efi-amd64-signed (1.66.6+2.02~beta2-36ubuntu3.6) ...
   grub-install: hiba: /usr/lib/grub/i386-pc/modinfo.sh nem létezik. Adja meg a --target vagy --directory kapcsolókat..
   dpkg: error processing package grub-efi-amd64-signed (--configure):
    subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.1
   apt  1.2.15ubuntu0.2
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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