[Bug 1940900] [NEW] Grub failed boot detection - invalid enviroment block

[Joel Van Boxtel]

Public bug reported:

grub failed boot detection.

systemctl recalls this:
grub-initrd-fallback.service - GRUB failed boot detection
     Loaded: loaded (/lib/systemd/system/grub-initrd-fallback.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Tue 2021-08-24 15:28:39 AWST; 13min ago
   Main PID: 875 (code=exited, status=1/FAILURE)

Aug 24 15:28:39 Z390-AORUS grub-editenv[875]: /usr/bin/grub-editenv: error: invalid environment block.
Aug 24 15:28:39 Z390-AORUS systemd[1]: Starting GRUB failed boot detection...
Aug 24 15:28:39 Z390-AORUS systemd[1]: grub-initrd-fallback.service: Main process exited, code=exited, status=1/FAILURE
Aug 24 15:28:39 Z390-AORUS systemd[1]: grub-initrd-fallback.service: Failed with result 'exit-code'.
Aug 24 15:28:39 Z390-AORUS systemd[1]: Failed to start GRUB failed boot detection.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1940900

Title:
  Grub failed boot detection - invalid enviroment block

Status in grub2 package in Ubuntu:
  New

Bug description:
  grub failed boot detection.

  systemctl recalls this:
  grub-initrd-fallback.service - GRUB failed boot detection
       Loaded: loaded (/lib/systemd/system/grub-initrd-fallback.service; enabled; vendor preset: enabled)
       Active: failed (Result: exit-code) since Tue 2021-08-24 15:28:39 AWST; 13min ago
     Main PID: 875 (code=exited, status=1/FAILURE)

  Aug 24 15:28:39 Z390-AORUS grub-editenv[875]: /usr/bin/grub-editenv: error: invalid environment block.
  Aug 24 15:28:39 Z390-AORUS systemd[1]: Starting GRUB failed boot detection...
  Aug 24 15:28:39 Z390-AORUS systemd[1]: grub-initrd-fallback.service: Main process exited, code=exited, status=1/FAILURE
  Aug 24 15:28:39 Z390-AORUS systemd[1]: grub-initrd-fallback.service: Failed with result 'exit-code'.
  Aug 24 15:28:39 Z390-AORUS systemd[1]: Failed to start GRUB failed boot detection.

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