ML: Optimized Realtek AppleHDA - Preview/Alpha

[ZOleg]

only 1 issue, i see in system.log and on console:

Sound assertion in AppleHDACodecGeneric at line 360

but audio work well.

 

[3nigm4]

What 96KHz source are you using?

I set 96Khz in Audio MIDI Setup and immediately in Console I get 3 Assertion, from that in every program I try to use (iTunes, Cog, Premiere, VLC, etc.) no audio. iTunes start but the progress bar remain @ 0:00, in VLC I see video but no audio, idem in Cog and Premiere.
I don't know if I am missing something in my configuration.
The only other kexts I use are FakeSMC+iTEIT87x+APCISensors+NVClockX+IntelCPUMonitor, RealtekRTL81xx, AHCI_3Party_SATA.
Actually SMBios Mac Pro 4.1.

Thank you in advance.

l0v3r

 

[ksosx86]

Hi I'm able to get working ALC898 with the kext posted here: http://www.tonymacx86.com/audio/55638-interim-realtek-ivy-bridge-lion-applehda.html
but with any later kexts than that, or with this mountain lion one, I get no working onboard audio, only hdmi, is there something I am missing or some additional customization required for it to work with the newer kexts? I'm using a dsdt with HDEF entry, I changed it to 1 for the mountain lion preview but still no go. Same dsdt works fine with the older interim realtek ivy bridge kext.

 

[toleda]

Hi I'm able to get working ALC898 with the kext posted here: http://www.tonymacx86.com/audio/55638-interim-realtek-ivy-bridge-lion-applehda.html
but with any later kexts than that, or with this mountain lion one, I get no working onboard audio

I don't know. Attach your dsdt and an IOReg with the Preview 898 AppleHDA.kext installed.

 

[herflet]

Hi all

I am struggling to get audio working on my build*. I am trying to get analog audio working first, then want to add HDMI audio.

Mobo: Zotac H77ITX-B-E (Realtek ALC892) / CPU: i5 3570k / Intel HD Graphics 4000

I extracted a DSDT, and followed instructions for add/edit DSDT/HDEF. In the DSDT, I am using layout 3.
I tried both:
* the Multibeast method of UserDSDT + Drivers/Audio/Realtek ALC8xx/withDSDT/ALC892.
* Installing the AppleHDA.kext from ML_AppleHDA-892.

Doesn't work, I get kernel[0]: Sound assertion in AppleHDAController at line 470 errors in the log.

Attached is my DSDT, IOReg, a screenshot, and my Console/All Message from boot: View attachment herflet-24August-HDEF.zip


I appreciate any and all help!
-herflet


*check my sig for the progress so far on the Zotac mono -- everything but audio I know how to get working...

 

[ksosx86]

I don't know. Attach your dsdt and an IOReg with the Preview 898 AppleHDA.kext installed.

Here ya go...preview kext installed, sys is 10.8.1

 

[toleda]

Hi all

I am struggling to get audio working on my build*. I am trying to get analog audio working first, then want to add HDMI audio.

The attached dsdt has no edits (no HDEF, no DTGP). However IOReg, shows a layout-id. Reboot with UseKernalCache=No and attach edited dsdt and new copy of IOREG.

 

[toleda]

Here ya go...preview kext installed, sys is 10.8.1

Thanks. IOReg shows audio working. Two more requests: 1. Make an IOReg with iTunes playing to the internal speakers with Preview. 2. install the Interim, start iTunes, confirm sound and make an IOreg. Reply with both IORegs.

 

[ksosx86]

Thanks. IOReg shows audio working. Two more requests: 1. Make an IOReg with iTunes playing to the internal speakers with Preview. 2. install the Interim, start iTunes, confirm sound and make an IOreg. Reply with both IORegs.

I did what you asked but encountered one problem, whenever I tried playing a track in Itunes using the preview kext it would list the track as playing but the timer would never count past 0 seconds, nevertheless I saved an IOReg copy while doing that.

 

[herflet]

The attached dsdt has no edits (no HDEF, no DTGP). However IOReg, shows a layout-id. Reboot with UseKernalCache=No and attach edited dsdt and new copy of IOREG.

I did a clean reformat / reinstall from Unibeast. Intel HD 4000 graphics, Sleep/wake, and LAN work. But still have audio problems.

Following steps in first post of this thread, created a dsdt.aml using layout-id 3. Installed with Multibeast, using only the UserDSDT setting. Have not installed any audio drivers from Multibeast.

I did not install a patched AppleHDA because of this section from the first post:

New "Feature" of Mountain Lion AppleHDA
1. AMD/Nvidia and HD3000/HD4000 HDMI audio works without on board audio working (assuming dsdt edits) by setting HDEF/layout_id to an existing Apple layout_id such as 1. That means systems with unsupported audio codecs can have HDMI audio and AirPlay audio using the native AppleHDA.kext in Mountain Lion (do not Install a Patched AppleHDA for this feature).
​

When I reboot with UserKernelCache=No, I get slightly more info in the System Information/Audio section, but audio doesn't work either way.



View attachment herflet-dsdt-edits-and-IOReg.zip

Attached in the zip is the edited DSDT and IOReg from a KernelCache=No session. Thanks!