I don't know how you all have done it but I am not able to make my Asus Rampage II Gene, bios 1701 system sleep properly in either Lion 10.7.4 or Mountain Lion 10.8.0. I 've used dgsga's dsdt.aml, compiled blackosx's dsl from DSDT_ASUS_Rampage_II_Gene.dsl.zip, compiled my own linux-extracted bios1701-based dsl using blackosx's instructions but without success. I also tried with patched AppleRTC and/or AppleIntelCPUPowerManagement kexts. The only thing that sleeps is the display, the network and the fans continue to work.
I am using latest Chameleon with the latest kozlek's hwsensors (fakesmc), AD2000b.kext, IOAHCIBlockStorageInjector.kext, and JMicron36xeSATA.kext in /Extra/Extensions/ .
Can anyone share his/her Extra folder (dsdt.aml, org.chameleon.Boot.plist, kexts, etc) ?