[Bug 1598233] Re: package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Steve Langasek]

*** This bug is a duplicate of bug 1582320 ***
    https://bugs.launchpad.net/bugs/1582320

This appears to be a duplicate of bug #1582320, which should be fixed
with 16.04.1.  Please check whether you're able to install Ubuntu on
this system using the 16.04.1 install media, and if not please follow up
to let us know.

** This bug has been marked a duplicate of bug 1582320
   libdebian-installer uses a different detection method for EFI than efivar

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Title:
  package shim-signed 1.12+0.8-0ubuntu2 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

Status in shim-signed package in Ubuntu:
  New

Bug description:
  Installing Ubuntu 16 LTS in a separate partition (ext9) failed : I had to install the OEM ISO disk to boot with Grub!
  It didn't include Windows10 partition : I had to upgrade Ubuntu 14.04  LTS so get a functionning Grub that can boot Windows 10 version 15.11

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: shim-signed 1.12+0.8-0ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
  Uname: Linux 4.4.0-24-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  BootEFIContents:
   fw
   fwupx64.efi
  Date: Fri Jul  1 08:27:41 2016
  DuplicateSignature:
   package:shim-signed:1.12+0.8-0ubuntu2
   Setting up grub-efi-amd64-signed (1.66+2.02~beta2-36ubuntu3) ...
   grub-install : erreur : /usr/lib/grub/i386-pc/modinfo.sh n'existe pas. Veuillez utiliser --target ou --directory.
   dpkg: error processing package grub-efi-amd64-signed (--configure):
    subprocess installed post-installation script returned error exit status 1
  EFIBootMgr: Error: command ['efibootmgr', '-v'] failed with exit code 2: efibootmgr: EFI variables are not supported on this system.
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.1
   apt  1.2.12~ubuntu16.04.1
  SourcePackage: shim-signed
  Title: package shim-signed 1.12+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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