If you are using same BIOS, dsdt and ssdt files Airwalk and I are using than sleep should be working. You need to enable S3 option in a BIOS, all/any C options (C1E or C6 are the ones I tried). Computer goes to deep sleep and wakes up fine. However I don't use sleep. My MB version is 1.0 and after several sleep/wake events I see my temps going up. You can read all about it on EVGA forums. It is a well known issue that EVGA still failed to fix after numerous BIOS upgrades. People with MB v.1.1 reported mixed results - S3 working for some but not all. People who have Virtualization disabled/don't use it seem to have better luck with double pumping issues and sleep.