Today I've updated my BIOS to the latest version 0057, reset the bios as I always do to start from scratch with all my previous settings, and I've noticed that the "wake on USB from S5" is not working anymore if I have Fast Startup enabled in Windows® 10. I'm using a logitech keyboard K830, and it was working before... What is wrong there?
Thanks for your feedback. It's very clear. I haven't noticed it in the documentation... In fact it is a pity that those two nice functions can't work together due an unknown reason and I hope it can be solved in a near future, if possible.
By the way, could you explain what is behind this "issue"?
Blocking a wake function from S5 state when Fast Boot is enabled is a Windows 10 future, rather than Bios future. When you press Shut down (with Fast Boot enabled), your NUC is entering into a state that’s a mix of shutdown and hibernation instead of completely shutting down the PC. If Fast Startup is enabled, Windows logs off any active user sessions and saves the kernel session to disk when shutting down. This allows Windows to boot faster compared to when performing a full system initialization. This state is very similar to S3 and S4 states. So, you can wake them up by pressing key or mouse move. In order to make Fast Startup to be as "transparent" to the user, this behavior is of course not acceptable. So, when Windows make hybrid shut down, it sends also halt instruction to all connected devices before it send power down instruction to ACPI subsystem, which technically cut off the power. That's why wake on USB function does not work in hybrid shutdown mode. When Fast boot is disabled, Windows does not send halt instructions, because it does not have to - in normal power off mode you can't run computer by mouse move, keyboard etc. (unless you set up your BIOS that way), so halt instructions are not necessary. To day when fast booting SSD drives are in use, the Fast Start function is not very effective any more.
Hope this answer to your question
Your explanation is clear, but I've got confused.
I can notice a considerable difference on speed if I use my SSD with and without Fast Boot, and I like this feature... On the other hand, when I use hibernate, wake on USB works as desired and it is a kind of fast boot + wake on USB, and this is my point of confusion right now because it is a hybrid mode what theoretically cuts off the power of the connected devices as you've described. What is behind this event that differs from what you've explained?
But speaking about a SSDs it makes no sense to force the unit to hibernate, you agree with me, right?
I agree with the following:
Were you able to check LWAKSMAN's post?
Let me know if you need further assistance.
Intel Customer Support Technician
Under Contract to Intel Corporation
Yes I did. I will continue to use the method I'm using that is unfortunately not the fastest, but at least it does what I need. Thanks for the support guys!