[Bug 1729226] Re: package grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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https://bugs.launchpad.net/bugs/1729226

Title:
  package grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12 failed
  to install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  after installationn with existing grub to separate ssd some script
  exit with error

  Now after boot i have dialog with this problem.

  Another case is when i call sudo apt-get install .... and when
  installation finishes i got error messages at console output about
  grub

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12
  ProcVersionSignature: Ubuntu 4.10.0-37.41~16.04.1-generic 4.10.17
  Uname: Linux 4.10.0-37-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  Date: Wed Nov  1 10:47:45 2017
  DuplicateSignature:
   package:grub-efi-amd64-signed:1.66.12+2.02~beta2-36ubuntu3.12
   Setting up grub-efi-amd64-signed (1.66.12+2.02~beta2-36ubuntu3.12) ...
   grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please specify --target or --directory.
   dpkg: error processing package grub-efi-amd64-signed (--configure):
    subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.2
   apt  1.2.24
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.66.12+2.02~beta2-36ubuntu3.12 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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