Dear Maintainer,

First of all, I am not exactly sure `shim-signed` is the correct package
to report this bug for, but it still seems the most appopriate. Please
do correct it if I am actually wrong.

I currently have this weird problem where my computer initiates the boot
process correctly, but right after the BIOS starts loading my Debian
installation, shim prints quite the amount of messages, then GRUB is
called as per usual and the rest carries on normally, except that no
unsigned and registered kernel modules may be loaded: SecureBoot forbids
it. The details of these messages are available as pictures
[here](https://imgur.com/a/9cBQL6M) -- I couldn't copy-paste by
definition, sorry if it is hard to read. From what I can see among these
logs, I can't really spot any error messages, except for
`LibDeleteVariable("MokSBStateRT", ...) => Not Found` (images 5 and 6).

I am running Debian using a Dell XPS 9560, with UEFI and SecureBoot
activated in the BIOS setup.