Hi MiniITX:
Here are two archives for two different Z77Pro4-M builds: one IvyBridge, one SandyBridge.
Both BIOS's have been flashed to 1.6 with the unlocked mod off that wordpress site. Both builds also have SSDT's in the Extra folder, although I can't recall if I generated these with RevoGirl's ssdt-pr script or with the built-in option in MultiBeast.
I also provided screen shots of the boot plist files, and pertinent system profile pages.
On the SandyBridge, sleep MIGHT actually be working. It took awhile to catch, but the fans did eventually spin down and flicker off; however, I couldn't get the system to reawaken. I attached a bdmesg dump if that helps. There are also some interesting fail-to-load items near the end, like SMC init and HDA-gfx.
The IvyBridge has more problems besides No Sleep: The Audio ID is showing as "1" rather than "892," and even though the graphics card is correctly identified by number (0x6758), the chipset is non-descript (Radeon HD 6xxx). There are posts all over tonymac about this but no fixes. BTW, my initial attempt at a custom DSDT for this build proved ineffective. I'm sure there's more to it than I was doing. Mac-specific definitions probably, and a bunch else. All I had to go by was Toledo's suggestions for adding the hex-equivalent for 892 Audio to the HDEF field, but even with that addition, the Audio ID still showed up as "1" in System Profiler. So since that didn't work and sleep also didn't work, I just removed the DSDT. That's when I decided to seek your assistance.
Thanks for the offer to take a look at this. Really appreciate it.
MacAppreciator