By the way, as you can see the kernel package name is "linux-image-unsigned". Because that's not an official kernel package but built from a personal PPA, it cannot be signed, which follows you'll have to disable SecureBoot before trying it out.
By the way, as you can see the kernel package name is "linux- image-unsigned" . Because that's not an official kernel package but built from a personal PPA, it cannot be signed, which follows you'll have to disable SecureBoot before trying it out.