Onboard-Audio von 2.0 auf 5.1

@Alessandro Carlini
Hallo und herzlich Willkommen im Forum...
Wenn du English lesen kannst, wäre folgende Anleitung wahrscheinlich hilfreich:
http://buildingahackintosh.wee…ng-51-surround-sound.html

EDIT:
Es geht aber auch in Deutsch -> Surround 5.1 möglich ???

That's not enough information...
What exactly did you do and what is the result?

Ok, first of all, I grabbed your posts and created a new thread out of them to not spoil the original one...

I don't find any video in the Links I posted... can you please send the link to the video you used?

What is your current speaker setup and how are they connected to your computer?

So, what is the idea of having a 5.1 output with two speakers?
The guide expects to have speakers connected to several outputs to create the 5.1 aggregate.

BTW: are you sure you have a GA H81M-DH3? I cannot find any Gigabyte Product page for that board.

Which kexts are you using for your Onboard ALC892 anyway?
I hope it's not the VoodooHDA or stuff like that...

In that case you should first of all get rid of the VoodooHDA and try the AppleALC.kext.
This kext can be used in connection to either a patched DSDT, which contains the Injection of your ALC892 Codec, or with the Clover DSDT fix "FixHDA" in combination with the Device Setting "Audio Inject 1".
Get rid of all unnecessary kexts like
VoodooHDA
HDAEnabler
HDADisabler
RealtekALC
CloverALC
or manually patched AppleHDA.
Make sure the installed AppleHDA is the original in regards to your current OSX Version.
You can check this with the "System Information/System Report" by looking at the part "Software" -> "Extensions" - "Obtained from" column.

Put the latest version of AppleALC from here --> AppleALC - der dynamische AppleHDA Patcher - immer aktuell in your EFI-Partition, where you have the other Kexts, which Clover loads for you.
Make a reboot and hopefully be happy...

In that case you should find some kind of FAQ in either english or italian, since our FAQ is only in german and there is way too much information to try to translate that into a post...

http://www.insanelymac.com/forum/forum/301-technical-faq/
http://www.insanelymac.com/forum/forum/96-italiano/

Your Picture was added while I answered that post, so I didn't saw it before...
Let's try something different...
Do you know the application Teamviewer? https://www.teamviewer.com/en/
If so, please install it, start it and send me your ID and password via Personal Messages within the forum...
I will start a conversation, so you can just reply to it...

Der Vorgang wurde erledigt...
Nach bereinigen der gepatchten AppleHDA und den zusätzlichen AppleHDA-KextsToPatch Einträgen, plus dem neu sortieren der Kexte aus /L/E und /S/L/E in den Ordner /EFI/CLOVER/kexts/other, musste nur noch die originale AppleHDA wieder hergestellt, der AppleALC mit in die EFI gelegt und per Kext Utility die Rechte und der Cache neu eingerichtet werden.
Im Clover selbst wurde noch "FixHDA" aktiviert und der "Audio Inject" auf 1 gesetzt.
Nach einem erfolgreichen Neustart konnte dann auch die 5.1 Aggregate-Einstellung direkt und sauber genutzt werden...

@Alessandro Carlini
Have a good time with your hackintosh...