The new ACPI spec promised elegance: an OS-controlled power management stack, device hierarchy, thermal zones, and S3 sleep (the “suspend to RAM” that Apple already did beautifully). But NT was a dinosaur. Its kernel was built on the assumption that it , and only it, owned the hardware. ACPI required the OS to hand control back to a firmware interpreter—a tiny, bug-ridden virtual machine called the ACPI Machine Language (AML) interpreter.
She waited ten seconds, then pressed the spacebar. acpi driver for nt