El Capitan on Optiplex 7020 with Haswell i7 ES cpu?

[Hervé]

If you can't patch AppleHDA, I'd recommend you use a much more recent VoodooHDA than v2.8.5. Slice recently published his own version v2.8.9 and that seems to work rather well on systems where it was deployed.

[nomove]

I opened my 7020 and checked the Audio chip,

it is a alc3220, not 1150.

but it is still strange that voodoohda+1150 driver runs it normally.

[Hervé]

If you run DCPIManager, it'll show you the exact audio codec fitted to your system.

[nomove]

It is a ALC3220, as figure,

And I used VoodooHDA288 suggested by @ioncatana in his 3020.

 

But, there is a bug, maybe:

 

As I say before,

the when XCODE7 installs,

an error maybe appears and blocks AppleHDADisabler.kext forever.

Today, this happens again.

I installed VoodooHDA288, the audio works normally, reboots also ok.

but after I installed XCODE7 and reboot, the audio disappears, forever.

Even these is NO error appears.

 

After this,

I install XCODE7 and build a game project before VoodooHDA,

Until now, the audio works normally after several reboots.

[Hervé]

DCPIManager shows id 10EC0280 -> it means that the actual codec of your ALC3220 audio chipset is ALC280. That's what you'd need to look for in terms of AppleHDA patch.

[Jake Lo]

Use ALC280 from here, install to /Library/Extensions. Remove VoodooHDA and AppleHDADisabler. Restore vanilla AppleHDA if you removed it. Repair permission and rebuild cache

 

Add this to your Config under KextToPatch and use layoutID 3 for HDEF in Config or DSDT

 

 

Comment
Realtek ALC280 #2
Find

hBnUEQ==

Name
AppleHDA
Replace

gALsEA==



Comment
Realtek ALC280 #3
Find

hQjsEA==

Name
AppleHDA
Replace

AAAAAA==



Comment
Realtek ALC280 - 10.11
Find

gxnUEQ==

Name
AppleHDA
Replace

AAAAAA==



Comment
Realtek ALC280 #1
Find

hAjsEA==

Name
AppleHDA
Replace

AAAAAA==

 

 

[nomove]

tks,

 

you mean copy the AppleHDA_ALC280.kext.zip to S/L/E as name AppleHDA,

and then insert your code to config.plist 

and reboot?

 

I will try it.

[Hervé]

No, to run patched AppleHDA, you need:

1) to inject the correct HDEF layout through DSDT patch or via bootloader

2) load the codec definition kext (AppleHDA_ALC280 in your case). Ideally, place it in /Library/Extensions.

3) binary patch /S/L/E/AppleHDA, either through Clover on-the-fly patch or via actual binary file patching

 

You will need to repair permissions and rebuild cache for your change to operate.

 

DO NOT replace the AppleHDA kext of /S/L/E by the codex definition kext. You'd lose all ability to run Apple HDA.

[nomove]

tks!

 

but it works only on front panel.

the internal speaker and back panel still keep silence.

[Hervé]

Means the patch needs to be revised to match your own audio hardware arrangements. You'll have to follow the AppleHDA patching guide (look it up on the forum) and dump your codec data through Linux.