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Hi Dear General Conti How are you doing? i hope all's fine since long time :D


So here i need to get worked the sound IDT 92HD87B1 for Lion & MLION pls


In Mountain Lion, i saw the sound enabled to drag high & down but no sound heard from ?!


I like to make it work by Applehda & how to do that ...


Many thanks & Best greetings.

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My only experance with Intel IDT is the chip in this series 6 mainboard on my HP probook.



00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086] (rev 04)


I am not sure if this will apply to yours, but it may or may not work with some minor modifications, at least maybe it will serve to give you an example as a place to start. I placed the binpatched AppleHDA.kext I will attach to this post (renamed and version bumped to survive OS updates and not interfere with the vanilla extension) in /System/Library/Extesnsions/ - ran myfix - and edited the HDEF section of my dsdt with the following (your address may be different, the important bit is the Method (_DSM, 4, NotSerialized), you will need to inject this into your HDEF leaving the other parts intact - the following is merely a reference point):


            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 (0x06)
                           Buffer (0x0A)

                           Buffer (0x04)
                               0x0C, 0x00, 0x00, 0x00

                           Buffer (Zero) {}
                       }, Local0)
                   DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
                   Return (Local0)


Please note that the hda-gfx portion of this code is not for IDT alone, but rather for HDMI audio output. This is for a series 6 sandy bridge platform.


Let me know how it turns out, and please include your lspci -nnn output next time, that way we have a better idea of what we are dealing with.

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