[Bug 1480495] Re: package shim-signed 1.9+0.8-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steve Langasek]

please show the output of the following commands:

which grub-install
apt-cache policy grub2-common

** Changed in: shim-signed (Ubuntu)
       Status: New => Incomplete

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Title:
  package shim-signed 1.9+0.8-0ubuntu2 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

Status in shim-signed package in Ubuntu:
  Incomplete

Bug description:
  Everytime I update Ubuntu, there's an error message.

  ProblemType: Package
  DistroRelease: Ubuntu 14.04
  Package: shim-signed 1.9+0.8-0ubuntu2
  ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
  Uname: Linux 3.16.0-45-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  Date: Thu Jul 30 23:58:12 2015
  DuplicateSignature: package:shim-signed:1.9+0.8-0ubuntu2:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2015-05-20 (72 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: shim-signed
  Title: package shim-signed 1.9+0.8-0ubuntu2 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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