[Bug 2077969] Re: Settings > Ubuntu Desktop > "No Ubuntu settings found"

[Alessandro Astone]

Looking at the logs from willayd and kak4ubuntu I can see that the
`ubuntu-desktop-minimal` metapackage (nor `ubuntu-desktop`) was not
marked for upgrade, which implies that it was not installed at the
beginning of the upgrade process, so it was removed by the user at some
point.

Because the new `gnome-shell-ubuntu-extensions` package is only required
by the `ubuntu-desktop` and `ubuntu-desktop-minimal` metapackages, the
release-upgrader will correctly remove the old extensions packages as
obsolete it but won't install the new `gnome-shell-ubuntu-extensions`
package because there's no dependency on it.

As packagers, we could have avoided this by keeping the old extensions
packages available in resolute as purely transitional packages towards
`gnome-shell-ubuntu-extensions`.

But ultimately I would classify the bug as a system misconfiguration
because of the lack of the `ubuntu-desktop-minimal` package.

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Confirmed => Invalid

** Also affects: gnome-session (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: gnome-session (Ubuntu)
       Status: New => Opinion

** Changed in: gnome-control-center (Ubuntu)
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/2077969

Title:
  Settings > Ubuntu Desktop > "No Ubuntu settings found"

Status in gnome-control-center package in Ubuntu:
  Invalid
Status in gnome-session package in Ubuntu:
  Opinion
Status in ubuntu-release-upgrader package in Ubuntu:
  Invalid

Bug description:
  my ubuntu taskbar disappeared and when I go to settings>ubuntu desktop this messages appears "no ubuntu settings found" and   "oops, something has gone wrong. Please report a bug in Launchpad". I think I deleted some package wrongly while trying to use tactile app and gnome-extensions. Can you guys help me? Didnt find anything on internet. 
  Best regards.

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: subiquity (unknown)
  ProcVersionSignature: Ubuntu 6.8.0-41.41-generic 6.8.12
  Uname: Linux 6.8.0-41-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Aug 27 10:41:49 2024
  InstallationDate: Installed on 2024-06-16 (73 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   XDG_RUNTIME_DIR=<set>
  SourcePackage: subiquity
  Symptom: installation
  UpgradeStatus: No upgrade log present (probably fresh install)

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