[Bug 1886769] Missing required logs.

[Ubuntu Kernel Bot]

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 1886769

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

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https://bugs.launchpad.net/bugs/1886769

Title:
  [ 0.000000] Initramfs unpacking failed: Decoding failed

Status in grub2 package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in syslinux package in Ubuntu:
  New

Bug description:
  Steps to reproduce:
  1. Download MATE Groovy daily (sha256sum = 7d2fdad36b8fcf0409aa0a484755e5fc5ef3798fd256eeebbde905a71ad474b7 )
  2. Insert ISO into VirtualBox with EFI enabled
  3. Boot VM

  Expected results:
  * VM boots normally

  Actual results:
  * VM hangs during early boot with message

        [ 0.000000] Initramfs unpacking failed: Decoding failed

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