...is Microsoft is using Windows security as another excuse to block Linux. Wll it work? Who knows. It has not been implemented yet. Yes, I use Linux. Currently I am running Slackware on an Acer Aspire and a homebuilt PC. If this secureboot goes through then I may not be able to buy hardware, say next year, that I can install Linux on. Essentially, if we buy a PC or the hardware to build one we should have the freedom to install whatever OS we want on it.
Consider all the threats to Windows - viruses, trojans, key loggers, etc. They infect a Windows system when it is actually running, not before it boots. I may be wrong here and if I am I am sure someone will correct me. So, this Secureboot issue seems to be more about locking out other operating systems rather than fixing Windows security. That's my opinion and I'm sticking with it unless someone can prove otherwise. This is backed up by the fact that Microsoft do not appear to have said, yes, add the function to be able to disable this secureboot, unless I have missed something somewhere.
I have only ever had 2 prebuilt PCs and they were back in the early/mid nineties. Since then I have built my own. Perhaps it will be possible to buy motherboards on their own with this function disabled, or with the ability to disable it. We do need to know what manufacturers are going to do about this instead of speculating on what may or may not happen. Yes, maybe the EU will put a stop to it, and maybe the US will get the locked down motherboards while Europe (and maybe the rest of the world) get fully functional ones. I do think that this may come under the heading of anti-competitiveness but we will have to wait and see.