[Bug 1869558] Re: after the update of "grub-efi-amd64-signed 1.93.16+2.02-2ubuntu8.15" ubuntu doesn't boot

[tormec]

@dabfus: in #4 you wrote that "Secure Boot" is "enabled" and since I
managed to solve the problem with "Secure Boot" and "Legacy Support" (or
whatever it's called under your Bios) both "disabled" have you tried to
do the same (with all the necessary precautions)?

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Title:
  after the update of "grub-efi-amd64-signed 1.93.16+2.02-2ubuntu8.15"
  ubuntu doesn't boot

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  After the installation of the new version of this package, the system
  doesn't boot. I have to enter in "Recovery Mode".

  $ lsb_release -rd
  Description:	Ubuntu 18.04.4 LTS
  Release:	18.04

  $ apt-cache policy grub-efi-amd64-signed
  grub-efi-amd64-signed:
    Installed: 1.93.16+2.02-2ubuntu8.15
    Candidate: 1.93.16+2.02-2ubuntu8.15
    Version table:
   *** 1.93.16+2.02-2ubuntu8.15 500
          500 http://it.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1.93+2.02-2ubuntu8 500
          500 http://it.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

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