I was asked to disable secure boot in order to install third party drivers on ubuntu 16.04. So I followed the instructions of MOK managemnt to disable secure boot.
But secure boot is still on in bios. It seems that ubuntu has added an exception for itself rather than completely turning it off.
Here is what happens:
1: laptop has win10 and ubuntu16.04 and both are installed in uefi with secure boot on.
2: before grub flashing it shows "booting in insecure mode" and then grub appears.
3: then I boot in win10 & check if secure boot is on using this guide, it shows that it is on.
What is happening here? Is secure boot on or off?
Has ubuntu added an exception for itself in secure boot database?
If ubuntu has added an exception for itself, I would like to know if I can add some more exceptions or remove existing exceptions?