[Bug 1989494] [NEW] Upgrade to Ubuntu 22.04 failed with "Can't install 'ubuntustudio-desktop'"

[Liam Wall]

Public bug reported:

A subsequent dialog box talks about ppa-purge and launchpad but I'm not
sure what this is. It says to install the `ppa-purge` package however
`apt search ppa-purge` returns nothing.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.39
ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-lowlatency 5.15.39
Uname: Linux 5.15.0-46-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Tue Sep 13 17:56:55 2022
InstallationDate: Installed on 2021-05-03 (498 days ago)
InstallationMedia: Ubuntu-Studio 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210210)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2022-09-13 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade focal third-party-packages

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https://bugs.launchpad.net/bugs/1989494

Title:
  Upgrade to Ubuntu 22.04 failed with "Can't install 'ubuntustudio-
  desktop'"

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  A subsequent dialog box talks about ppa-purge and launchpad but I'm
  not sure what this is. It says to install the `ppa-purge` package
  however `apt search ppa-purge` returns nothing.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.39
  ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-lowlatency 5.15.39
  Uname: Linux 5.15.0-46-lowlatency x86_64
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Tue Sep 13 17:56:55 2022
  InstallationDate: Installed on 2021-05-03 (498 days ago)
  InstallationMedia: Ubuntu-Studio 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210210)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2022-09-13 (0 days ago)
  VarLogDistupgradeTermlog:

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