Yes, that's why I ended up just disabling secure boot on my laptop (at the time I wanted to install another OS there wasn't even such tool available for the distribution I wanted to install).
At least I have an option to disable it completely, I heard some laptops don't even offer the choice to disable it.
It feels just the same as when you buy a smartphone and you have to find a hack to root it or install another OS (and possibly loose your warranty). I can't believe that happened to PCs as well

On Aug 24, 2016 12:30 AM, "Russell Hyer" <russell.hyer@gmail.com> wrote:
>
> Yes, Raphaël, that is an issue. After all, if you have one of those
> new fancy laptops (that doesn't have a libre BIOS) to run a
> non-Windows kernel, the tool you get to use (that you can find
> packaged into the Ubuntu boot discs) is actually a self-signed hack by
> Microsoft (MS) to allow you to boot ANY system, and the system
> "validates" itself. So, yeah, the commercial systems aren't worth
> much, but at least they allow you to undo the security, by pressing
> the hollywood button (TM).
>
> :)
>
> Russell
>