http://nullnyan.i2p/b/13307
Вот что пишут на https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface/Secure_Boot : Warning: Replacing the platform keys with your own can end up bricking hardware on some machines, including laptops, making it impossible to get into the firmware settings to rectify the situation. This is due to the fact that some device (e.g GPU) firmware (OpROMs), that get executed during boot, are signed using Microsoft 3rd Party UEFI CA certificate.