[Easy Guide] ML: UEFI HDMI Audio

[dikkiedirk]

At boot prompt, enter: DSDT=NULL

I tried that, but when I start MaciASL it insist it opens a pre-edited DSDT.

Is it save to use?

Come to think of it, is the right syntax DSDT=NULL or DSDT=0?

 

[sirretv]

Go to /extra put you DSDT to downloads! Then boot with DSDT=null (yes null without capitals)

 

[dikkiedirk]

Gonna do it all over. Just downloaded ML 10.8.4 from the app store and created an Unibeast stick from it.

Is this the right workorder?

1 Set BIOS correctly (Optimized defaults, AHCI) if necessary.
2 Install OS X.
3 Use Multibeast to install network and audio drivers, and others, System Definition? Is this still necessary when using PJALMs patches on System DSDT?
4 Set screen resolustion in chameleon boot plist.
5 Edit dsdt.aml with PJALMs patches.
6 Save dsdt.aml in /Extra
7 Restart.

Are there any settings in Multibeast that can cause HDMI audio not functioning?

 

[turboLT]

I've got HDMI audio working but intentionally didn't install any audio drivers with multibeast to get there.

If i run multibeast now with Realtek audio checked only for my mobo will I be able to use HDMI audio still and speakers out of the back, depending on what I choose in settings?

thanks!

 

[toleda]

If i run multibeast now with Realtek audio checked only for my mobo will I be able to use HDMI audio still and speakers out of the back, depending on what I choose in settings?

Yes, select With DSDT and the correct codec.

 

[turboLT]

Yes, select With DSDT and the correct codec.

Thank you!

 

[wood1y]

Hi Toleda,

Gigabyte Z77MX-D3H (VT2021, working with crappy voodoo) / i7-3770K / AMD HD7870 / no DSDT so far

Not Supported
1. AMD HD7xxx HDMI audio, 0210 01aa_v100300 HDMI codec not supported

So you mean, that I have NO CHANCE getting audio out from the 7870 hdmi output?
(I'll be honest, I have no clue what 0210 01aa_v100300 HDMI codec is, (neither does google)).

 

[toleda]

So you mean, that I have NO CHANCE getting audio out from the 7870 hdmi output?

TRUE with the current OS X release. The HD7xxx has a new HDMI audio codec. With the new Mac Pro going AMD, there is a HIGHLY LIKELY CHANCE HD7xxx HDMI audio is supported in the future.

 

[jennifermontes]

I've been lurking on these forums for more than a year now but toleda deserves my first post ever: THANK YOU SO MUCH!!

Editing my DSDT seemed like an EXTREMELY scary process to me and I was even considering not even trying and buying a DVI/Audio to HDMI converter instead. I read your guide like 5 times and when I finally summoned the guts to try it I triple-checked every step as I followed along...

AND NOW I'VE GOT HDMI AUDIO BABY!!

 

[toleda]

I'VE GOT HDMI AUDIO

Enjoy.