The kernel version has changed, and the module on the computer that opens the secure boot must be registered before it can be executed. The solution to this problem is to register these modules.

Second, create a signature.

Third, the registration module

Fourth, register the key for secure boot.

Verb (short for verb) Restart the computer->; Register MOK-& gt；; Continue-> Yes-> (Enter the password, which will be used later)-> restart

Operation of intransitive verbs