[Solved] GXT 550Ti HDMI audio in GA-965P-DS4 MB

[jsl]

Hi, I like to enable my GTX 550Ti HDMI audio in Mountain Lion 10.8.3 or 10.7.5.

However after many trials it's not working yet.

Can anyone help me as soon as possible ?

Because Tolera had said it seems impossible for this GTX 550Ti video card, is it true ?

Attached files are my DSDT.aml and IORegistry Data.

 

 

Solved now!

Credit to toleda who is a genius I believe.

Please refer to post #11~12 in

http://www.insanelym...59#entry1889459

dsdt.aml.zip

GA-965P-DS4_10.8.3.zip

[Rampage Dev]

You have ALC888. Is the AppleHDA you are using from Lion? If so you will have to patch AppleHDA for HDMI audio with your card. If you use a ML appleHDA it will work OOB with the edit you have.

 

HDDMI audio is loaded in your system.

[jsl]

You have ALC888. Is the AppleHDA you are using from Lion? If so you will have to patch AppleHDA for HDMI audio with your card. If you use a ML appleHDA it will work OOB with the edit you have.

 

HDDMI audio is loaded in your system.

Thanks for your prompt reply.

Yes I have patched several AppleHDA.kext but all are not working for HDMI audio.

I mean I can find HDMI audio in "About This Mac"(System Information), but there is no such a option of audio output in System Preference.

In the past I have successfully enabled ATI HD 5770, 5850 & 6870 as well as Intel HD 4000 with extra GTX 680 in 5 different PCs.

This is the first time I can not make it working.

According to Tolera's theory this GTX 550Ti seems never working properly for its HDMI audio.

So I just ask your expert's opinion again.

Do you mean just use native ML AppleHDA.kext instead of patched one will solve my problem ?

[Rampage Dev]

You need a AppleHDA from ML patched for your Onboard. ML appleHDA is no longer self initiating which means onboard must load prior to HDMI audio work unlike be fore.