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About This File

It works like a charm with "Ambient noise reduction" option in Sound Preference. Edit your DSDT like this:

Device (HDEF)

{

Name (_ADR, 0x001B0000)

OperationRegion (HDAR, PCI_Config, 0x4C, 0x10)

Field (HDAR, WordAcc, NoLock, Preserve)

{

DCKA, 1,

Offset (0x01),

DCKM, 1,

, 6,

DCKS, 1,

Offset (0x08),

, 15,

PMES, 1

}

Method (_DSM, 4, NotSerialized)

{

Store (Package (0x16)

{

"AAPL,slot-name",

Buffer (0x09)

{

"built-in"

},

"codec-id",

Buffer (0x04)

{

0x69, 0x02, 0xEC, 0x10

},

"built-in",

Buffer (One)

{

0x00

},

"name",

Buffer (0x0F)

{

"Realtek ALC269"

},

"model",

Buffer (0x10)

{

"Realtek ALC271X"

},

"device-type",

Buffer (0x25)

{

"High Definition Audio Controller"

},

"layout-id",

Buffer (0x04)

{

0x1C, 0x00, 0x00, 0x00

},

"device_type",

Buffer (0x06)

{

"Sound"

},

"subsystem-vendor-id",

Buffer (0x04)

{

0x86, 0x80, 0x00, 0x00

},

"hda-gfx",

Buffer (0x0A)

{

"onboard-2"

},

"PinConfigurations",

Buffer (Zero) {}

}, Local0)

DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))

Return (Local0)

}

Method (_PRW, 0, NotSerialized)

{

Return (Package (0x02)

{

0x0D,

0x05

})

}

}

If you're using Mavericks I recommend you to use these new kexts: http://www.osx86.net/view/4120-applehda_alc269_for_mavericks.html




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Recommended Comments

I still have this error in my kernel log, can you help me please.

Sound assertion "0 == hdaGfxCandidate" failed in AppleHDAController at line 1096 goto Exit

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You should try to install AppleHDA without AppleHDAController. That means you will be still use AppleHDAController original file. This may cause your audio operation after sleep

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It's still working perfectly for me in 10.8.5. As you know, there're many versions of ALC 269 with many different ports so this kext may works for me and orthers but you. This is normal :)

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