[Bug 1901740] Re: package grub-pc 2.04-1ubuntu26.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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Title:
  package grub-pc 2.04-1ubuntu26.4 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 1

Status in grub2 package in Ubuntu:
  New

Bug description:
  This is the result of responding to a screen prompt while working,
  something like "System error detected. Send report?"

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: grub-pc 2.04-1ubuntu26.4
  ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
  Uname: Linux 5.4.0-52-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.9
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Tue Oct 27 13:31:47 2020
  DuplicateSignature:
   package:grub-pc:2.04-1ubuntu26.4
   Setting up grub-pc (2.04-1ubuntu26.4) ...
   dpkg: error processing package grub-pc (--configure):
    installed grub-pc package post-installation script subprocess returned error exit status 1
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2016-04-27 (1644 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-52-generic root=UUID=9833c3f1-2502-4486-9b30-622e6e99abb8 ro nouveau.modeset=0 ast.modeset=0 net.ifnames=0 nvidia_drm.modeset=1 vga=normal video=vga16:off
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.17-4
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SourcePackage: grub2
  Title: package grub-pc 2.04-1ubuntu26.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to focal on 2020-10-06 (20 days ago)

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