package grub-efi-amd64 2.02~beta2-9ubuntu1.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 64

[crillerone]

After update

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: grub-efi-amd64 2.02~beta2-9ubuntu1.7
ProcVersionSignature: Ubuntu 3.13.0-85.129-generic 3.13.11-ckt36
Uname: Linux 3.13.0-85-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Sun Apr 17 19:09:38 2016
DuplicateSignature: package:grub-efi-amd64:2.02~beta2-9ubuntu1.7:subprocess installed post-installation script returned error exit status 64
ErrorMessage: subprocess installed post-installation script returned error exit status 64
InstallationDate: Installed on 2016-04-17 (0 days ago)
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-85-generic.efi.signed root=UUID=d290ada5-acea-470d-a2b9-ee2a8338cb48 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.12
SourcePackage: grub2
Title: package grub-efi-amd64 2.02~beta2-9ubuntu1.7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 64
UpgradeStatus: Upgraded to trusty on 2016-04-17 (0 days ago)

[Mate Kukri (mkukri)]

Ubuntu 14.04 is in ESM support only, please report a new bug if you are still experiencing similar issues on modern Ubuntu