For me works perfectly included after sleep, I've a sony vaio VGN-CR260F.
My /Extra folder has:
..-MacBook-Pro:~$ ls -la /Extra/Extensions
total 0
drwxr-xr-x 10 root wheel 340 May 3 12:28 .
drwxr-xr-x@ 5 root wheel 170 May 3 12:28 ..
drwxr-xr-x 3 root wheel 102 Feb 25 2010 AppleACPIPS2Nub.kext
drwxr-xr-x@ 3 root wheel 102 Apr 10 23:43 ApplePS2Controller.kext (mix from Bronxteck)
drwxr-xr-x 3 root wheel 102 May 2 16:32 Disabler.kext
drwxr-xr-x 3 root wheel 102 May 2 16:32 ElliottForceLegacyRTC.kext
drwxr-xr-x 3 root wheel 102 May 2 16:32 EvOreboot.kext
drwxr-xr-x 3 root wheel 102 Mar 28 16:16 SleepEnabler.kext
drwxr-xr-x 3 root wheel 102 May 2 16:32 VoodooBattery.kext
drwxr-xr-x 3 root wheel 102 May 2 16:32 fakesmc.kext
The voodooHDA in on /System/Library/Extension
Thank you.