[Bug 2043243] Re: Release upgrade fails with error about PPAs -- but no PPAs installed

[Greg Ward]

I also tried

```
sudo apt remove ubuntu-desktop xubuntu-desktop && sudo apt install ubuntu-desktop xubuntu-desktop
```

which resulted in no net change. Here's what the `install` command did:

```
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following NEW packages will be installed:
  ubuntu-desktop xubuntu-desktop
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 5,116 B of archives.
After this operation, 22.5 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.mirror.rafal.ca/ubuntu lunar/main amd64 ubuntu-desktop amd64 1.501 [2,570 B]
Get:2 http://archive.ubuntu.mirror.rafal.ca/ubuntu lunar/universe amd64 xubuntu-desktop amd64 2.248 [2,546 B]
Fetched 5,116 B in 1s (9,663 B/s)           
Selecting previously unselected package ubuntu-desktop.
(Reading database ... 469204 files and directories currently installed.)
Preparing to unpack .../ubuntu-desktop_1.501_amd64.deb ...
Unpacking ubuntu-desktop (1.501) ...
Selecting previously unselected package xubuntu-desktop.
Preparing to unpack .../xubuntu-desktop_2.248_amd64.deb ...
Unpacking xubuntu-desktop (2.248) ...
Setting up ubuntu-desktop (1.501) ...
Setting up xubuntu-desktop (2.248) ...
```

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/2043243

Title:
  Release upgrade fails with error about PPAs -- but no PPAs installed

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

Bug description:
  I ran update-manager to upgrade to Ubuntu 23.10. It downloaded a bunch
  of stuff and churned for a while, and then popped up this error
  dialog:

  > Could not calculate the upgrade
  > 
  > An unresolvable problem occurred while calculating the upgrade.
  > 
  >  This was likely caused by:
  >  * Unofficial software packages not provided by Ubuntu
  > Please use the tool 'ppa-purge' from the ppa-purge 
  > package to remove software from a Launchpad PPA and 
  > try the upgrade again.
  > 
  > If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'.

  I do have several third-party repos configured in
  /etc/apt/sources.list.d, but not of them are PPAs. Here's what I have:

  ```
  $ cat brave-browser-release.list
  deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg arch=amd64] https://brave-browser-apt-release.s3.brave.com/ stable main

  $ cat google-cloud-sdk.list
  deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main

  $ cat ngrok.list
  # deb https://ngrok-agent.s3.amazonaws.com buster main # disabled on upgrade to mantic

  $ cat slack.list
  ### THIS FILE IS AUTOMATICALLY CONFIGURED ###
  # You may comment out this entry, but any other modifications may be lost.
  # deb https://packagecloud.io/slacktechnologies/slack/debian/ jessie main # disabled on upgrade to mantic

  $ cat vscode.list
  ### THIS FILE IS AUTOMATICALLY CONFIGURED ###
  # You may comment out this entry, but any other modifications may be lost.
  # deb [arch=amd64,arm64,armhf] http://packages.microsoft.com/repos/code stable main # disabled on upgrade to mantic
  ```

  The bottom of /var/log/dist-upgrade/main.log says this:

  ```
  2023-11-10 18:38:31,862 DEBUG Marking 'ubuntu-desktop' for upgrade
  2023-11-10 18:38:32,045 WARNING Can't mark 'ubuntu-desktop' for upgrade (E:Unable to correct problems, you have held broken packages.)
  2023-11-10 18:38:32,045 DEBUG Marking 'xubuntu-desktop' for upgrade
  2023-11-10 18:38:32,210 WARNING Can't mark 'xubuntu-desktop' for upgrade (E:Unable to correct problems, you have held broken packages.)
  ```

  Hmmmmmmmmm.

  ProblemType: Bug
  DistroRelease: Ubuntu 23.04
  Package: ubuntu-release-upgrader-core 1:23.04.7
  ProcVersionSignature: Ubuntu 6.2.0-1007.7-lowlatency 6.2.12
  Uname: Linux 6.2.0-1007-lowlatency x86_64
  ApportVersion: 2.26.1-0ubuntu2.1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashDB: ubuntu
  CrashReports:
   600:117:124:37:2023-11-10 12:50:34.011233923 -0500:2023-11-10 09:50:34.782762954 -0500:/var/crash/_usr_libexec_xfce4-screensaver-dialog.1000.uploaded
   644:1000:124:0:2023-11-10 09:50:34.189762709 -0500:2023-11-10 09:50:34.189762709 -0500:/var/crash/_usr_libexec_xfce4-screensaver-dialog.1000.upload
   640:1000:124:3001891:2023-11-10 09:50:34.188762708 -0500:2023-11-10 09:50:34.223762723 -0500:/var/crash/_usr_libexec_xfce4-screensaver-dialog.1000.crash
  CurrentDesktop: XFCE
  Date: Fri Nov 10 18:40:52 2023
  InstallationDate: Installed on 2022-11-28 (347 days ago)
  InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to lunar on 2023-11-10 (0 days ago)
  VarLogDistupgradeTermlog:

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/2043243/+subscriptions