This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1847042

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: disco

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https://bugs.launchpad.net/bugs/1847042

Title:
  Kernel 5.3.0-13-generic crashes at boot in tpm_read_log_efi(), HP
  EliteBook 840 G5

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Upgraded to Ubuntu 19.10 from 19.04.

  On first boot of 19.10, Kernel 5.3.0.13-generic crashed with an error
  in tpm_read_log_efi(), see screenshot. Disabling TPM in BIOS allowed
  successful boot of kernel 5.3.0.13-generic.

  Kernel 5.0.0-31-generic will boot 19.10 successfully, with or without
  TPM enabled in the BIOS.

  Hardware is HP EliteBook 840 G5. BIOS not most recent, cannot upgrade
  without installing Windows.

  ---

  $ lsb_release -rd

  Description:  Ubuntu Eoan Ermine (development branch)
  Release:      19.10

  $ apt-cache policy linux-generic

  linux-generic:
    Installed: 5.3.0.13.14
    Candidate: 5.3.0.13.14
    Version table:
   *** 5.3.0.13.14 500
          500 http://gb.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
          100 /var/lib/dpkg/status

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