[Bug 1385725] Re: package grub-efi-amd64-signed 1.38+2.02~beta2-15 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Tormod Hellen]

The Ubuntu error reporting program directed me here. In my case I think
the error comes from my computer's motherboard having UEFI but not
secure boot. It made me go through some hoops I don't remember when
installing. Definitely not fixable by using bootrepair, though. Since
then I always get "package failed to install" error messages on every
update.

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Title:
  package grub-efi-amd64-signed 1.38+2.02~beta2-15 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  Just installed 14.10 on Toshiba satelite laptop
  I always have an issue with the boot loader so I fixed it(?) with boot repair

  ProblemType: Package
  DistroRelease: Ubuntu 14.10
  Package: grub-efi-amd64-signed 1.38+2.02~beta2-15
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  Date: Sat Oct 25 19:28:49 2014
  Df:
   Filesystem     1K-blocks    Used Available Use% Mounted on
   /dev/sr0        47695788 3969860  41280052   9% /cdrom
   /dev/sda2         262144   52280    209864  20% /boot/efi
   udev             3021228       4   3021224   1% /dev
   tmpfs             606612    1208    605404   1% /run
  DuplicateSignature: package:grub-efi-amd64-signed:1.38+2.02~beta2-15:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2014-10-25 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.38+2.02~beta2-15 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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