[Bug 2085156] [NEW] Can't end do-release-upgrade without error

[Tjark Remar]

Public bug reported:

### English Summary of the Issue:

During an attempt to upgrade an Ubuntu system from version 22.04 to
24.04 using the `do-release-upgrade` command, the process failed due to
unresolved package conflicts or issues related to third-party software
repositories (PPAs).

#### Steps that were taken:
1. **Initial Command:**
   The upgrade process was initiated manually using:
   ```bash 
      sudo do-release-upgrade
   ```

2. **SSH Warning:**
   The system detected that the session was running over SSH, warning about potential risks and offering to start an additional SSH service on port 1022 for recovery in case of failure.

3. **Download and Preparation:**
   The upgrade tool downloaded the required packages and began verifying the system’s package management and installed software.

4. **Error Encounter:**
   During the upgrade process, an issue was encountered:
   - The system could not calculate the available updates and reported an *unresolvable problem* during the upgrade calculation phase.
   - The error message indicated that this was likely caused by *non-official software packages* installed from third-party repositories (PPAs).
   - The suggestion was to use `ppa-purge` to remove these external packages and retry the upgrade process.

5. **Automatic Rollback:**
   After detecting the issue, the upgrade tool restored the system to its previous state and aborted the upgrade process.

6. **Bug Report Initiated:**
   To address this issue, a bug report was filed using the following command:
   ```bash 
      ubuntu-bug ubuntu-release-upgrader-core
   ```

The logs for this failed upgrade can be found in the `/var/log/dist-
upgrade/` directory, specifically in the `main.log` and `apt.log` files.
These logs provide further details on the issue, including which
packages or repositories caused the conflict.

### Next Steps:
- Investigate the conflicting third-party repositories or packages.
- Remove or disable them using tools like `ppa-purge`.
- Retry the upgrade after resolving the package issues.

Would you like to proceed with additional troubleshooting steps or need
help with log analysis?

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-release-upgrader-core 1:22.04.20
ProcVersionSignature: Ubuntu 6.8.0-47.47~22.04.1-generic 6.8.12
Uname: Linux 6.8.0-47-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.6
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CrashReports: 640:0:128:714222:2024-10-21 13:18:44.042301326 +0200:2024-10-21 13:18:43.854301318 +0200:/var/crash/_usr_sbin_plymouthd.0.crash
Date: Mon Oct 21 20:58:03 2024
InstallationDate: Installed on 2021-05-13 (1257 days ago)
InstallationMedia: Ubuntu-Budgie 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210210.1)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to jammy on 2024-10-21 (0 days ago)
modified.conffile..etc.update-manager.release-upgrades: [modified]
mtime.conffile..etc.update-manager.release-upgrades: 2024-10-21T12:26:34.075145

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


** Tags: amd64 apport-bug dist-upgrade jammy

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Ubuntu.
https://bugs.launchpad.net/bugs/2085156

Title:
  Can't end do-release-upgrade without error

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

Bug description:
  ### English Summary of the Issue:

  During an attempt to upgrade an Ubuntu system from version 22.04 to
  24.04 using the `do-release-upgrade` command, the process failed due
  to unresolved package conflicts or issues related to third-party
  software repositories (PPAs).

  #### Steps that were taken:
  1. **Initial Command:**
     The upgrade process was initiated manually using:
     ```bash 
        sudo do-release-upgrade
     ```

  2. **SSH Warning:**
     The system detected that the session was running over SSH, warning about potential risks and offering to start an additional SSH service on port 1022 for recovery in case of failure.

  3. **Download and Preparation:**
     The upgrade tool downloaded the required packages and began verifying the system’s package management and installed software.

  4. **Error Encounter:**
     During the upgrade process, an issue was encountered:
     - The system could not calculate the available updates and reported an *unresolvable problem* during the upgrade calculation phase.
     - The error message indicated that this was likely caused by *non-official software packages* installed from third-party repositories (PPAs).
     - The suggestion was to use `ppa-purge` to remove these external packages and retry the upgrade process.

  5. **Automatic Rollback:**
     After detecting the issue, the upgrade tool restored the system to its previous state and aborted the upgrade process.

  6. **Bug Report Initiated:**
     To address this issue, a bug report was filed using the following command:
     ```bash 
        ubuntu-bug ubuntu-release-upgrader-core
     ```

  The logs for this failed upgrade can be found in the `/var/log/dist-
  upgrade/` directory, specifically in the `main.log` and `apt.log`
  files. These logs provide further details on the issue, including
  which packages or repositories caused the conflict.

  ### Next Steps:
  - Investigate the conflicting third-party repositories or packages.
  - Remove or disable them using tools like `ppa-purge`.
  - Retry the upgrade after resolving the package issues.

  Would you like to proceed with additional troubleshooting steps or
  need help with log analysis?

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-release-upgrader-core 1:22.04.20
  ProcVersionSignature: Ubuntu 6.8.0-47.47~22.04.1-generic 6.8.12
  Uname: Linux 6.8.0-47-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.6
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  CrashReports: 640:0:128:714222:2024-10-21 13:18:44.042301326 +0200:2024-10-21 13:18:43.854301318 +0200:/var/crash/_usr_sbin_plymouthd.0.crash
  Date: Mon Oct 21 20:58:03 2024
  InstallationDate: Installed on 2021-05-13 (1257 days ago)
  InstallationMedia: Ubuntu-Budgie 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210210.1)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to jammy on 2024-10-21 (0 days ago)
  modified.conffile..etc.update-manager.release-upgrades: [modified]
  mtime.conffile..etc.update-manager.release-upgrades: 2024-10-21T12:26:34.075145

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