[Bug 2008280] Re: regression: update-manager 1:23.04.1 no longer installs any updates (lunar)

[Renan Rodrigo]

As far as we know, this is happening only for lunar, so it does not require a hotfix.
The fix will land with the next version of ubuntu-advantage-tools.

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https://bugs.launchpad.net/bugs/2008280

Title:
  regression: update-manager 1:23.04.1 no longer installs any updates
  (lunar)

Status in ubuntu-advantage-tools package in Ubuntu:
  Confirmed
Status in update-manager package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  On a fairly standard installation of lunar (ie no ubuntu pro linked
  etc), the update-manager no longer appears able to install the updates
  which are listed in the ui when clicking install.

  symptoms:
  - launch update-manager 1:23.04.1
  - note that updates are available
  - note that the ui shows 'unknown download size' in the bottom-left (this should be specified)
  - note that the terminal output shows "required_download could not be calculated: E:Can't find a source to download version 'PKGVERSION' of 'PKGNAME:amd64'"
  - click 'install now' button to install the listed updates
  - note that update-manager doesn't actually install the updates (starting the update fails), the ui jumps to the generic 'installing snap updates' and then shows 'your system is up to date'
  - note that if you launch update-manager again all the (same) updates are showing again

  severity:
  - this is a little concerning as the user can no longer install any updates using the update-manager ui - this includes updates for other packages and of course any updated package including a fix for this issue. (sudo apt update/upgrade in the terminal do of course still work)
  - whilst this issue has been around for at least 5 days there don't appear to be any other reports of this issue. It doesn't seem likely to be something specific to my system though.

  investigation:
  - installing the debs of update-manager 1:22.10.6 (the previous version) resolves this issue
  - it would appear that revision 2959 ( https://bazaar.launchpad.net/~ubuntu-core-dev/update-manager/main/revision/2959 ) is the first revision to introduce this issue
  - this seems related to Ubuntu Pro / Advantage

  Thanks for your attention

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