[Bug 2039557] [NEW] TPMFDE installation fails for autoinstall

[James Paton-Smith]

Public bug reported:

When installing Ubuntu 23.10.1 using the new ubuntu-desktop-installer with an autoinstall config and TPMFDE storage layout, the installation completes successfully but upon reboot is unable to unlock the disk.
Note this is the FIXED ISO (16/10/2023) after the earlier issue with malicious translations.

Instead I am prompted for the recovery key, which I am unable to acquire
before rebooting into the newly installed system

Below is the autoinstall config used

```
#cloud-config
autoinstall:
  version: 1
  interactive-sections:
    - keyboard
    - network
  locale: en_GB.UTF-8
  keyboard:
    layout: gb
  kernel:
    flavor: generic
  apt:
    geoip: true
    preserve_sources_list: false
    primary:
      - arches: [default]
        uri: 'http://archive.ubuntu.com/ubuntu'
  identity:
    hostname: unassigned-hostname
    username: redacted
    realname: redacted
    password: 'redacted'
  ssh:
    install-server: true
    authorized-keys: []
    allow-pw: true
  storage:
    grub:
      reorder_uefi: false
    layout:
      name: hybrid
      encrypted: yes
  user-data:
    timezone: Europe/London
```

** Affects: ubuntu-desktop-installer
     Importance: Undecided
         Status: New

** Affects: subiquity (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: ubuntu-desktop-installer
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to subiquity in Ubuntu.
https://bugs.launchpad.net/bugs/2039557

Title:
  TPMFDE installation fails for autoinstall

Status in ubuntu-desktop-installer:
  New
Status in subiquity package in Ubuntu:
  New

Bug description:
  When installing Ubuntu 23.10.1 using the new ubuntu-desktop-installer with an autoinstall config and TPMFDE storage layout, the installation completes successfully but upon reboot is unable to unlock the disk.
  Note this is the FIXED ISO (16/10/2023) after the earlier issue with malicious translations.

  Instead I am prompted for the recovery key, which I am unable to
  acquire before rebooting into the newly installed system

  Below is the autoinstall config used

  ```
  #cloud-config
  autoinstall:
    version: 1
    interactive-sections:
      - keyboard
      - network
    locale: en_GB.UTF-8
    keyboard:
      layout: gb
    kernel:
      flavor: generic
    apt:
      geoip: true
      preserve_sources_list: false
      primary:
        - arches: [default]
          uri: 'http://archive.ubuntu.com/ubuntu'
    identity:
      hostname: unassigned-hostname
      username: redacted
      realname: redacted
      password: 'redacted'
    ssh:
      install-server: true
      authorized-keys: []
      allow-pw: true
    storage:
      grub:
        reorder_uefi: false
      layout:
        name: hybrid
        encrypted: yes
    user-data:
      timezone: Europe/London
  ```

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-desktop-installer/+bug/2039557/+subscriptions