[Bug 1888791] Re: package ubuntustudio-lowlatency-settings 20.04.2.1 failed to install/upgrade: installed ubuntustudio-lowlatency-settings package post-installation script subprocess returned error exit status 1

[Erich Eickmeyer]

While they may have occurred while upradeing ubuntustudio-lowlatency-
settings, the key is here:

device-mapper: reload ioctl on osprober-linux-sda4  failed: Device or resource busy
Command failed.

This tells me that it wasn't the  package itself that failed, but
rather, os-proper or grub failed to open a necessary device during the
grub-update command.

** Package changed: ubuntustudio-default-settings (Ubuntu) => os-prober
(Ubuntu)

** Changed in: os-prober (Ubuntu)
       Status: New => Triaged

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Title:
  package ubuntustudio-lowlatency-settings 20.04.2.1 failed to
  install/upgrade: installed ubuntustudio-lowlatency-settings package
  post-installation script subprocess returned error exit status 1

Status in os-prober package in Ubuntu:
  Triaged

Bug description:
  na

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: ubuntustudio-lowlatency-settings 20.04.2.1
  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: 2.20.11-0ubuntu27.4
  AptOrdering:
   ubuntustudio-lowlatency-settings:amd64: Install
   grub-efi-amd64-signed:amd64: Install
   grml-rescueboot:amd64: Install
   NULL: ConfigurePending
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Fri Jul 24 01:15:30 2020
  ErrorMessage: installed ubuntustudio-lowlatency-settings package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2020-07-20 (3 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  PackageArchitecture: all
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.3
  SourcePackage: ubuntustudio-default-settings
  Title: package ubuntustudio-lowlatency-settings 20.04.2.1 failed to install/upgrade: installed ubuntustudio-lowlatency-settings package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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