[Bug 1936381] Re: package grub-pc 2.04-1ubuntu35.6 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 127

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** Tags removed: need-duplicate-check

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Title:
  package grub-pc 2.04-1ubuntu35.6 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 127

Status in grub2 package in Ubuntu:
  New

Bug description:
  Touchpad not working

  ProblemType: Package
  DistroRelease: Ubuntu 20.10
  Package: grub-pc 2.04-1ubuntu35.6
  ProcVersionSignature: Ubuntu 5.4.0-77.86-generic 5.4.119
  Uname: Linux 5.4.0-77-generic x86_64
  ApportVersion: 2.20.11-0ubuntu50.7
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Thu Jul 15 18:58:25 2021
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 127
  InstallationDate: Installed on 2021-07-15 (0 days ago)
  InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64 (20200806.1)
  InvalidGrubScript: /etc/default/grub
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-77-generic root=UUID=028aaac9-63cd-4801-a3b0-95b946f998f5 ro quiet splash ivrs_ioapic[32]=00:14.0 vt.handoff=7
  Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.6-0ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.20.5ubuntu2
   apt  2.1.10ubuntu0.3
  SourcePackage: grub2
  Title: package grub-pc 2.04-1ubuntu35.6 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 127
  UpgradeStatus: Upgraded to groovy on 2021-07-15 (0 days ago)

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