Problem:

insmod: ERROR: could not insert module MODULENAME.ko: Required key not available

Solution:

1) sudo apt install mokutil 2) sudo mokutil —disable-validation 3) When executed, the terminal will let you set up 8-16 digit password (after you do, do not forget Oh ~) Next, restart the computer, a blue screen (do not be nervous, press any key to enter the selection interface :–)), options are as follows: – Continue boot – Change Secure Boot state – Enroll key from disk – Enroll hash from disk to select –>Change Secure Boot state<– , next in line before you enter the password. requiresEnter password character 7, Meaning that the password bit 7 (this point to note!). 4) enter –> Disable Secure Boot selection <– screen, select yes (Do not simply press Enter, this would be lost, only to start all over again!). 5) returned to the next screen beginning interface, reboot selection, re-enter the system