[Bug 1924605] Re: Grub2 menu not loading - could not create MokListXRT

[Julian Andres Klode]

The fix is for Lenovo to issue a firmware update with the new dbx in
it's ro storage so it doesn't have to be in the efi vars. Seems unlikely
to happen though.

It's possible the variables are read only, which is why you can't delete
it.

I'm sorry to say, but these are firmware issues, there's nothing
userspace can do.

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Title:
  Grub2 menu not loading - could not create MokListXRT

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  Thinkpad T430 I5-3320M
  Ubuntu 21.04 (ZFS)
  Dual boot: Ubuntu and Windows 10 on separate drives

  Steps to reproduce:

  * system update using 'apt update' in terminal. I have attached apt log file. The problem appeared after 'Start-Date: 2021-04-15  19:40:02', last entry.
  * 'zsysctl service gc -vv' - to remove unnecessary states
  * restart the system

  Outcome:

  * Grub2 menu does not show. Instead, error messages appear: 
  'Could not create MokListXRT: Out of Resources'
  'Failed to set MokListXRT: Out of Resources'
  * After 10 sec Ubuntu starts (Ubuntu was previously set as default system)

  Expected outcome:
  * Grub2 menu with Ubuntu, Windows and recovery options

  ProblemType: Bug
  DistroRelease: Ubuntu 21.04
  Package: grub-efi (not installed)
  ProcVersionSignature: Ubuntu 5.11.0-14.15-generic 5.11.12
  Uname: Linux 5.11.0-14-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu62
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr 15 20:13:35 2021
  InstallationDate: Installed on 2021-03-15 (31 days ago)
  InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210315)
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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