[Bug 1781719] Re: package grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Steve Langasek]

*** This bug is a duplicate of bug 1767276 ***
    https://bugs.launchpad.net/bugs/1767276

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1767276, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** This bug has been marked a duplicate of bug 1767276
   Could not delete variable: Interrupted system call (package shim-signed 1.34.9+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 1)

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https://bugs.launchpad.net/bugs/1781719

Title:
  package grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  Adding boot menu entry for EFI firmware configuration
  Found linux image: /boot/vmlinuz-4.15.0-23-generic
  Found initrd image: /boot/initrd.img-4.15.0-23-generic
  Found linux image: /boot/vmlinuz-4.15.0-22-generic
  Found initrd image: /boot/initrd.img-4.15.0-22-generic
  Found linux image: /boot/vmlinuz-4.15.0-15-generic
  Found initrd image: /boot/initrd.img-4.15.0-15-generic
  Found linux image: /boot/vmlinuz-4.13.0-17-generic
  Found initrd image: /boot/initrd.img-4.13.0-17-generic
  Found linux image: /boot/vmlinuz-4.2.0-35-generic
  Found initrd image: /boot/initrd.img-4.2.0-35-generic
  Found linux image: /boot/vmlinuz-4.2.0-34-generic
  Found initrd image: /boot/initrd.img-4.2.0-34-generic
  done
  Errors were encountered while processing:
   grub-efi-amd64-signed
   shim-signed
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1
  ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
  Uname: Linux 4.15.0-22-generic x86_64
  NonfreeKernelModules: kpatch_livepatch_Ubuntu_4_15_0_22_24_generic_40 nvidia_modeset nvidia
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  Date: Sat Jul 14 22:39:50 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2016-04-20 (815 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160419)
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.2
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.2+2.02-2ubuntu8.1 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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