If You Lost your Sound after 10.6.5 ….
For anyone who lost sound on ALC-888:
1- Go to the site download area and download tmongkol alc 888 “10.6.3+” patched kext
2- Manually put it over /System/Library/Extensions
3- USE DISK UTILITY TO REPAIR PERMISSIONS
4- Open terminal and type: sudo touch /System/Library/Extensions
5- Reboot
6- Enjoy.
PS: Do not use mkext based tools such as kext helper or other automatic kext installer: they use generic permissions, Disk Utility is the best way to keep your Mac OS X clean.
COPYLEFT ANTOINE LAVOISIER 

10.6.5 In P45 DS4 work all fine, sound included.
Still no sound, GA-EP43-DS3L, ALC888 confirmed. Followed to the dot the instructions…
I have a GA-EP43-DS3 did u figure it out yet?
With this do I need a HDAEnabler.ketxt?
Thomas Reggi
Boot to safe-mode ” -v”.
Download Multibeast 2.5.0 from Tonymac, go to Advance Options,kexts,Audio,Tick(select) AppleHDA 10.6.2 Rollback, continue and complete the installation and before Restart.
Run Disk Utilities to repair permissions.
Hope you get your sound restored.
Maybe he should give us more info. Just a note on the bootloader:
-v Verbose boot
-x Safe mode boot
-f Force kexts load (ignore caches)
-s Single user mode (root prompt)
Unless he uses a enabler, mac bios wont give him audio with the vanilla 10.6.2…
Also note that using a patched kext or voodooHDA is better for 888 user until now (0.8)
Lets hope some of ours trials to help works for him
remember to have no mkext, never, and clean your caches
Just did it, and still no sound.
Are you sure you are using the tmongkol’s patched kext at /S/L/E and nothing else? No mkext? Boot with -f and see what happens… Please report back, be welcome to show your face and ideas here an at the forums
Have a EP45-UD3L and this patched audio kext did not work for me either. Thankfully I had my /S/L/E folders backed up in Compressed Zip File. Extracted the AppleHDA.kext from that folder, Deleted existing kext from /S/L/E, copied over 10.6.4 working kext to /S/L/E, authenticated, chown and chmod, deleted /S/L/Caches/com.apple.kext.caches, touched /S/L/E. Rebooted. SOUND!!!!!!!!!
I know this sounds like a silly question, but I’m a noob and cannot work out what you mean by step #3.
Where can I find the disk utility you speak of to repair permissions?
Ignore my posting… I worked it out. For those as new to OSX as I am, the disk utility can be found under “Applications” in the Utilities sub folder. Click the disk volume that you have installed OSX on and then hit the “Repair Disk Permissions” button.
This fix worked a treat, thanks Cartri!
I got it working a while back (sorry I wasn’t very specific). I forgot exactly what I did but i’m hesitant to update to 10.6.6, any update? I was / am using multibeast. I’m bookmarking this page so that when I need to I can look back, thanks all!!
Just repeat the procedure to 10.6.6, but multibeast changes many things, It will give you many options.