3 replies to this topic

[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

Attached Files

•  dsdt.aml.zip   6.33K   10 downloads
•  GA-965P-DS4_10.8.3.zip   387.77K   6 downloads

[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]

Rampage Dev, on 16 February 2013 - 05:00 PM, said:

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.