[Bug 1841685] Re: package grub-efi-amd64-signed 1.66.22+2.02~beta2-36ubuntu3.22 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/1841685

Title:
  package grub-efi-amd64-signed 1.66.22+2.02~beta2-36ubuntu3.22 failed
  to install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  dual boot UEFI Windows 10

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-efi-amd64-signed 1.66.22+2.02~beta2-36ubuntu3.22
  ProcVersionSignature: Ubuntu 4.4.0-157.185-generic 4.4.181
  Uname: Linux 4.4.0-157-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.19
  Architecture: amd64
  Date: Mon Aug  5 21:51:42 2019
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2019-04-08 (140 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.5
   apt  1.2.32
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.66.22+2.02~beta2-36ubuntu3.22 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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