[Bug 1532207] Re: package grub-efi-amd64-signed 1.34.8+2.02~beta2-9ubuntu1.7 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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Title:
  package grub-efi-amd64-signed 1.34.8+2.02~beta2-9ubuntu1.7 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  I have a multi boot system with Ubuntu 14.04.3 , windows 10, windows
  8.1. The error ocurred installing software update on January 08, 2016

  ProblemType: Package
  DistroRelease: Ubuntu 14.04
  Package: grub-efi-amd64-signed 1.34.8+2.02~beta2-9ubuntu1.7
  ProcVersionSignature: Ubuntu 3.16.0-57.77~14.04.1-generic 3.16.7-ckt20
  Uname: Linux 3.16.0-57-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  Date: Fri Jan  8 09:13:28 2016
  DuplicateSignature: package:grub-efi-amd64-signed:1.34.8+2.02~beta2-9ubuntu1.7:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2015-07-02 (189 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  RelatedPackageVersions:
   dpkg 1.17.5ubuntu5.5
   apt  1.0.1ubuntu2.10
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.34.8+2.02~beta2-9ubuntu1.7 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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