I'm on 10.7.3 and can't get the hack to "fully" sleep or wake up. When I tell it to sleep via the Apple menu, the fans spin UP, the monitors go in to standby, as well the lights on the keyboard & mouse go out. I can't wake it back up, when I click the mouse, the light turns back on but the fans are still spinning loudly and the screens are off, as well when I try the power button nothing responds.
I don't have a DSDT, I have an intel mobo and the BIOS is set to the S3 state for sleep. I do not have the nullpowermanagement.kext, when I tried the updated sleepenabler.kext for 10.7.3 I got a kernel panic in AppleIntelCPUPowerManagement.
I read in this thread that removing the Generate C & P states from the kernel flags may help, I have done this and didn't have any change. (In CPU temp, speed, fan activity or sleep functionality).
As an aside note, when I go to Shutdown the hack, it stays on for about a minute and then it will just restart, I'm not sure if these issues are related. Any help would be much appreciated.