[Bug 2107457] Re: Can't boot after installation with TPM backed FDE on xps9320

[Chris Coulson]

Like Mate suggested, I suspect this is a case of there either being
additional load events in PCR4 when running the initial install,
resulting in an invalid PCR policy being created, or a case of us
creating a valid PCR policy but there being additional load events in
PCR4 when trying to boot the installed system. Unfortunately, the
attached log doesn't show that. As this is a Dell and I have a spare
XPS15 at home, I'll try some boots to see if I can recreate the issue.
It would be nice for us to have a TCG log from a device that
demonstrates the issue so that we know how to properly fix it.

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Title:
  Can't boot after installation with TPM backed FDE on xps9320

Status in subiquity package in Ubuntu:
  New

Bug description:
  I tried installing Ubuntu 25.04 desktop with TPM backed FDE on two
  different XPS 9320 units.

  The installation seems to succeed.

  However, on first boot, it is asking me for a recovery key.

  Please enter the recovery key for volume ubuntu-
  data-a2b3ba2e-2555-4957-a47b-94804d4c119 for device /dev/disk/by-
  uuid/6bdc5a11-5d7d-4d64-89f-05d9464191e (press TAB for no echo)

  Inputting the passphrase entered during the installation does not work

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