= Switchable Graphics Info =

PowerXpress - AMD
Switchable - Nvidia (Optimus = MUXless)

== Optimus Reverse Engineering ==

On card copy engine - TODO

=== ACPI methods ===

WMI Method used to switch MUX

==== WMMX Method ====
GUID: {F6CB5C3C-9CAE-4EBD-B577-931EA32A2CC0}

Function MXDS: display switch (on Lenovo arg1 = 0x10 - IGD, else DIS

Function MXMX:

Function _DOD:

Function _DCS:

Function _ROM:

==== _DSM Method ====

DSM UUID {0xA0, 0xA0, 0x95, 0x9D, 0x60, 0x00, 0x48, 0x4D, 
          0xB3, 0x4D, 0x7E, 0x5F, 0xEA, 0x12, 0x9F, 0xD4}

Method 2 : Optional LED control 

Method 3 : Power control, Power on/off DGPU

Method 6 : returns an ACPI output table