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[ytrox]

after some troubles I've get a way to fix ''native'' audio support on my asrock alivenf7g.
It doesn't support voodoohda and snow apple hda so I've try to install applehda from 10.5.7 patched with taruga's hdaPatcher, a custom dummy kext containing pinconfig and device-id injetion and device HDEF under ''Name (_ADR, 0x00070000)'' in my dsdt.

Device (HDEF)
			{
				Name (_ADR, 0x00070000)
				Method (_DSM, 4, NotSerialized)
				{
					Store (Package (0x08)
						{
							"layout-id", 
							Buffer (0x04)
							{
								0x0C, 0x00, 0x00, 0x00
							}, 
							"codec-id", 
							Buffer (0x04)
							{
								0x62, 0x06, 0xEC, 0x10
							}, 
							"device-type", 
							Buffer (0x0F)
							{
								"Realtek ALC662"
							}, 
							"PinConfigurations", 
							Buffer (Zero) {}
						}, Local0)
					DTGP (Arg0, Arg1, Arg2, Arg3, RefOf (Local0))
					Return (Local0)
				}
			}

et voilà, audio works 2in & 2out. perfect!
the strange thing is that the audio bridge 00070000 is different from standard 001B0000 so I believe that snow hda won't recognize driver

 Asrock_alc_662.zip   745.53K   86 downloads

Another way to get only output working is using leopard applehda (above) and appleazaliaAudio.kext  AppleAzaliaAudio.kext.zip   82.99K   59 downloads no dsdt patch needed

[zipxavier]

Thanks so much for this, the second kext works perfectly on 10.6.8 with an ASRock G41M-S3.