Update to 10.6.8 broke my optical audio - any help?

Mac mini 2010, upgraded to 10.7 and occasional sound skipping.

Since I use it most of the time as an HTPC with XBMC, it is pretty useless now.

Replacing the kext with the one in the 10.6.7 combo did not help, the hdmi and internal audio outputs disappeared.

Oh well, guess I'm on for 2 hours of reinstalling 10.6.7. Too bad, I bought a Magic Trackpad because I was excited to try Lion. Guess it will have to wait.

Dear Apple, please fix this. Thank you.

Does anyone know if Apple have even acknowledged this??

It's very annoying. My MacMini is / will be stuck on 10.6.7 until the acknowledge this and offer a fix! 😟

Hi i solved the problem by reverting back to the AppleHDA.kext from combo update 10.6.7. But now I wanna install Lion and I understand the problem persists under Lion.

My question, has anyone tried to update to Lion and revert to/use the AppleHDA.kext from 10.6.7?

And yes: APPLE PLEASE FIX THIS PROBLEM!

Regards,

Lennart.

The last few posters would be well served by reading the thread. Your questions have already been asked and answered.

@arto65 try following the instructions posted by sebabo on page ten. I, too, lost all audio input/output when trying to replace 10.6.7 AppleHDA.ktext but sebabo's instructions worked flawlessly.

https://discussions.apple.com/thread/3139275?answerId=15594598022#15594598022

yeah ok, but is this working on os x lion too?

I will try it today!

And I will let you guys know it work or not.

@dunno, @jackos

Yes, I upgraded to Lion yesterday and tried the audio and had the same issue. I followed the steps in here: https://discussions.apple.com/thread/3139275?answerId=15594598022#15594598022 and it worked again. So it seems the AppleHDA.kext 2.1.1 included in Lion is still not working properly.

@Sebabo:

I have MBP Early 2011. I tried your method with the file for MBP Early 2011.

In the Lion, the AppleHDA.kext file size is 1.26Gb

But in the package, it was only 5.3Mb

After installing, I have no sound at all.

So I have to restore the AppleHDA.kext from Lion back to MBP and I have sound.

But sure that I have no 5.1 dts or AC3 digital out.

@chungtd

I've only tried this on my Mac Mini, not on a MBP. What I do find peculiar is that you say the AppleHDA.kext version 2.1.1 from Lion was 1.26GB file. Mine was only 9 MB and the one from the 10.6.7 Combo Update is 8.6 Mb in size.

I too had the same issue of no sound when I installed the AppleHDA.kext from the wrong path within the 10.6.7 Combo Update pkg, and the file was smaller than the correct one, though I can't recall its size.

Hi,

Thanks so much!

I think I will try with another pack.

I will get back soon if I have any luck!

@Sebabo:

I confirmed that your method was not working on Lion and MBP early 2011.

I downloaded the MacOSXUpdCombo10.6.7.pkg package but Pacifist was not be alble to mount it while the package for MBP early 2011 can be mounted.

I think we will have to wait for Apple

Tried Sebabo's fix with Snow Leopard 10.6.8 last week. It worked.

Updated to Lion Yesterday, same problem. Tried Sebabo's fix again. Still works. I had to perform the fix twice this time before it worked. But it did work.

2009 Mac Mini.

Thanks again Sebabo 🙂

I think the problem is also from Macbook Pro early 2011.
Apple provided another file for it so it was not be able to fix with Sebabo's method.

I have just installed Lion. I get no sound whatsoever. System preferences says "No output devices found". In addition to the internal speaker I have a Saffire Pro-40 which is showing up in the Hardware configuration. The system can not find any inputs either.

@Cactrot thank you for your comment. And yes, I did read the thread, including sebabo's post. It's not providing any information about how to get the hdmi and internal outputs back up again. I followed sebabo's instructions, but it did not work for my mac mini 2010.

What did you do to get the audio outputs back?

Anyway, I reinstalled 10.6.7, so problem solved I guess. I'll wait for the next 10.7 update.

It's the second time I have to reinstall my mac because of HDMI issues, it's getting old. So long for Mac reliability.