[Bug 1743265] Re: xubunto 17.04 to 17.10 upgrade. old grub setup was created manually during install on encrypted lvm volumes. package grub-efi-amd64-signed 1.85+2.02~beta3-4ubuntu7 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/1743265

Title:
  xubunto 17.04 to 17.10 upgrade. old grub setup was created manually
  during install on encrypted lvm volumes. package grub-efi-amd64-signed
  1.85+2.02~beta3-4ubuntu7 failed to install/upgrade: subprocess
  installed post-installation script returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  i have no idea what the problem was. just got this during upgrade.

  ProblemType: Package
  DistroRelease: Ubuntu 17.10
  Package: grub-efi-amd64-signed 1.85+2.02~beta3-4ubuntu7
  ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
  Uname: Linux 4.13.0-25-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  Date: Sun Jan 14 23:07:41 2018
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2018-01-03 (11 days ago)
  InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1
  RelatedPackageVersions:
   dpkg 1.18.24ubuntu1
   apt  1.5.1
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.85+2.02~beta3-4ubuntu7 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: Upgraded to artful on 2018-01-14 (0 days ago)

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