Grub menu is not shown because of shim error message

[Achim Behrens]

Running 21.04 on a thinkpad x230.
There is a shim error https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1924605 "could not create MokListXRT: Out of Resources" which displays this errormessage at bootup.

So Grub works, the menu works (you can still use the arrowkeys if you know the menu order) but it doesnt show the menu but this errormessage. The System boots up fine.

I was told to file a new bug for grub. This shim error is not going to be resolved so we need another workaround on the grub side so people can again access their grub menu when they need to, like when they have other issues and need to use the recovery entries or a dualboot.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: grub2 (not installed)
ProcVersionSignature: Ubuntu 5.11.0-17.18-generic 5.11.12
Uname: Linux 5.11.0-17-generic x86_64
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Sun May 23 12:01:58 2021
InstallationDate: Installed on 2018-10-19 (946 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: Upgraded to hirsute on 2021-03-20 (63 days ago)

[Julian Andres Klode (juliank)]

Currently working on resolving the very issue in shim.

Though on second thought, maybe it needs some investigating as to why the menu isn't showing but operational, because clearly that shouldn't happen either.

[Achim Behrens (k1l)]

looks like it was fixed in shim(-signed) package.
It works now as intended again.