package grub-efi-amd64-signed 1.34.14+2.02~beta2-9ubuntu1.12 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Cristian Ola]

crashed after update and reboot

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: grub-efi-amd64-signed 1.34.14+2.02~beta2-9ubuntu1.12
ProcVersionSignature: Ubuntu 3.13.0-71.114-generic 3.13.11-ckt29
Uname: Linux 3.13.0-71-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
Date: Wed Aug 31 08:57:25 2016
DuplicateSignature: package:grub-efi-amd64-signed:1.34.14+2.02~beta2-9ubuntu1.12:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-09-29 (341 days ago)
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.7
 apt 1.0.1ubuntu2.14
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.34.14+2.02~beta2-9ubuntu1.12 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to trusty on 2015-09-29 (341 days ago)

[Launchpad Janitor (janitor)]

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