[Bug 1908729] Re: package grub-pc 2.04-1ubuntu26.7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

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

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Title:
  package grub-pc 2.04-1ubuntu26.7 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 1

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  I am new user of Ubuntu I dont know much about the bugs and their
  details

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: grub-pc 2.04-1ubuntu26.7
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27.14
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Fri Dec 18 20:11:16 2020
  DuplicateSignature:
   package:grub-pc:2.04-1ubuntu26.7
   Setting up memtest86+ (5.01-3.1ubuntu2.1) ...
   /usr/sbin/grub-probe: error: failed to get canonical path of `rpool/ROOT/ubuntu_pnlrk9'.
   dpkg: error processing package memtest86+ (--configure):
    installed memtest86+ 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 2020-12-17 (0 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  ProcCmdLine: BOOT_IMAGE=/BOOT/ubuntu_pnlrk9@/vmlinuz-5.4.0-42-generic root=ZFS=rpool/ROOT/ubuntu_pnlrk9 ro quiet splash vt.handoff=1
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.2
  SourcePackage: grub2
  Title: package grub-pc 2.04-1ubuntu26.7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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