HP 431 ALC270 AppleHDA.kext + DSDT Success

[xumengfei]

Method (_DSM, 4, NotSerialized)

{

Store (Package (0x0C)

{

"hda-gfx",

Buffer (0x0A)

{

"onboard-2"

},

"codec-id",

Buffer (0x04)

{

0x70, 0x02, 0xEC, 0x10

},

"built-in",

Buffer (One)

{

0x01

},

"layout-id",

Buffer (0x04)

{

0x01, 0x00, 0x00, 0x00

},

"device-type",

Buffer (0x07)

{

"ALC270"

},

"PinConfigurations",

Buffer (0x00)

{

0x00

}

}, Local0)

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

Return (Local0)

}

Note: accessories by BetterZip decompression

AppleHDA.kext.zip.001.zip

AppleHDA.kext.zip.002.zip

[tilfer]

The patch and kext work on my HP431, however I have to edit this patch following DSDTEditor format because I use DSDTEditor. Now sound works far better than voodoohda. Thanks for the patch

[shijunnan]

I'm also using HP431,now running Yosemite,but I have trouble with fixing DSDT,would you please post your own dsdt here?Thanks a lot.

[tilfer]

Uploading it now. adding dsdt.dsl which you can see the patch inserted.

After updating from 10.9.0 to 10.9.5, the sound stop working. Had to use voodoohda for a while. Then I read somewhere that AppleHPET.kext had to be restored too. So I reinstalled this AppleHDA.kext and copy AppleHPET.kext from /Backup/Kext/ to /Sytem/Library/Extensions, repair permissions and rebuild kernel cache, and voila, the sound is back! Yay...

edit: sorry, my bad. AppleHPET.kext maybe is not the cause. I have to boot using -f in order to get AppleHDA to work.

DSDT.aml.zip

[shijunnan]

Thanks a lot！I'll try it tomorrow .