[Bug 2065229] Re: Upgrades to 24.04 LTS should be temporarily prevented for TPM FDE systems

[Timo Aaltonen]

Hello Nick, or anyone else affected,

Accepted ubuntu-release-upgrader into noble-proposed. The package will
build now and be available at
https://launchpad.net/ubuntu/+source/ubuntu-release-upgrader/1:24.04.18
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
noble to verification-done-noble. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-noble. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: ubuntu-release-upgrader (Ubuntu Noble)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-noble

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https://bugs.launchpad.net/bugs/2065229

Title:
  Upgrades to 24.04 LTS should be temporarily prevented for TPM FDE
  systems

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Committed
Status in ubuntu-release-upgrader source package in Noble:
  Fix Committed

Bug description:
  [Impact]
  It is not currently supported to upgrade desktop systems installed with TPM-backed FDE, so we should not allow such upgrades to start. We should notify the user of this and abort the upgrade.

  [Test Plan]

  Attempt an upgrade from 23.10 to 24.04 LTS on various types of Ubuntu
  installs:

  1. Desktop with TPM FDE
  2. Desktop classic
  3. LXD Container

  In case (1), the upgrade should be aborted with an appropriate message
  to the user. In cases (2) and (3), the upgrade should proceed as
  normally.

  [Where problems could occur]
  The test condition for determining that we are on Desktop with TPM FDE is checking that (a) pc-kernel snap is installed, and (b) ubuntu-desktop-minimal is installed. If the test condition is inadequate in some way, we would see bug reports about upgrades being blocked unnecessarily, or possibly users being allowed to upgrade despite running TPM FDE.

  As always with these kinds of quirks, if any package or snap names
  were spelled incorrectly, the quirk would not work correctly.

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