Hi guys,
I'm also using the new EFI on my Z68MX.
If I use Mac Pro 3,1 sys.def. everything works fine - no audio popping
But when I wake up the computer, it's not working - fans, HDDs everything turn on, but no screen, no USB, nothing (it's a KP, I guess).
If I use iMac 12,x sleep is fine, but...