[Bug 1800506] Re: package grub-efi-amd64 2.02+dfsg1-5ubuntu8 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1

[Ubuntu Foundations Team Bug Bot]

Thank you for taking the time to report this bug and helping to make
Ubuntu better.  Reviewing your dmesg attachment in this bug report it
seems that there is a problem with your hardware.  I recommend
performing a back up and then investigating the situation.  Measures you
might take include checking cable connections and using software tools
to investigate the health of your hardware.  In the event that is is not
in fact an error with your hardware please set the bug's status back to
New.  Thanks and good luck!

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** Tags added: hardware-error

** Changed in: grub2 (Ubuntu)
   Importance: Undecided => Low

** Changed in: grub2 (Ubuntu)
       Status: New => Invalid

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Title:
  package grub-efi-amd64 2.02+dfsg1-5ubuntu8 failed to install/upgrade:
  installed grub-efi-amd64 package post-installation script subprocess
  returned error exit status 1

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  I don't exactly know what is the error about but everytime I start
  ubuntu it gives an error.

  ProblemType: Package
  DistroRelease: Ubuntu 18.10
  Package: grub-efi-amd64 2.02+dfsg1-5ubuntu8
  ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
  Uname: Linux 4.15.0-38-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  Date: Mon Oct 29 22:08:16 2018
  ErrorMessage: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2016-07-31 (819 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic root=UUID=7dc0ddae-9b46-4a60-973a-e87785222665 ro quiet splash
  Python3Details: /usr/bin/python3.6, Python 3.6.7rc1, python3-minimal, 3.6.6-1
  PythonDetails: /usr/bin/python2.7, Python 2.7.15+, python-minimal, 2.7.15-3
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu5
   apt  1.7.0
  SourcePackage: grub2
  Title: package grub-efi-amd64 2.02+dfsg1-5ubuntu8 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to cosmic on 2018-10-29 (0 days ago)

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