As I suspect this to be Gigabyte issue, I post this to the motherboard forum, however admins please moderate as needed.
I have X570 Aorus Pro, Ryzen 3950x. This issue started after upgrading my processor to 3000 series.
So if I choose Sleep from Start menu, the computer shuts down instead of sleep. It is peculiar behavior, because first it seems it goes to sleep normally. But if I then press a key or mouse button to wake it up, it the fans spin up and it is same as total shutdown.
My issue seems to be exactly same as this:
What do you guys think?