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AppleHDA for ALC272 (Mountain Lion 10.8.5)

This is the version of AppleHDA for ALC272.

You must use the Layout1 ptach HDEF your DSDT.aml

Codec: Realtek ALC272

Address: 0

DevID: 283902578 (0x10ec0272)

Method (_DSM, 4, NotSerialized)
                {
                    Store (Package (0x0c)
                    {                        
                        "built-in", 
                        Buffer (One)
                        {
                            0x00
                        }, 
                        "layout-id", 
                        Buffer (0x04)
                        {
                            0x01, 0x00, 0x00, 0x00
                        }, 
                       "PinConfigurations", 
                       Buffer (0x00)
                       {
                           0x00
                       }
                    }, Local0)
                    DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                    Return (Local0)
                }

source