On Tue, May 11, 2010 at 10:42:52AM -0700, Linus Torvalds wrote: > Maybe windows does something else? Or do you _see_ windows doing that > write? I see Windows write the SCI_EN bit without reading it first and without calling the ACPI enable SMM function. > will write it _even_if_ the bit was already set. That could explain > Rafael's problems too - writing the register directly may be the > RightThing(tm), but writing it if the bit was already set may well cause > some confusion. Like I said, I don't see any reads on resume - only on system boot. -- Matthew Garrett | mjg59@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html