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64 bit dual boot system, Win 8.1 and Ubuntu 14.04.5

Recently changed GRUB to hide the menu and show a ten second countdown based on the accepted answer to this question: how can I get my GRUB menu to be hidden, AND have the shift or esc keys show the hidden GRUB menu at boot time

That works great, but now I am seeing this error during the countdown:

Error: Secure Boot forbids loading module from (hd2,gpt4)/boot/grub:x86_x64-efi/true.mod.

I checked, and a file /boot/grub/x86_64-efi/true.mod does exist, but I have no idea what it does, or what the implications of it not being loaded are.

It does not seem to cause any problem but GRUB errors always concern me.

What is the cause of this error?

Organic Marble
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1 Answers1

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Any time you have a system that doesn't want to load kernel extensions, or load /boot/grub files, it's a sure bet that secure boot needs to be disabled in your BIOS.

Secure boot was designed to only allow "signed" software to load, thereby stopping the loading of "unsigned" software, and theoretically potentially harmful software.

It's common in Ubuntu-land to add kernel drivers for wireless cards, and these are typically unsigned also.

heynnema
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