Considering the sleep issue, I am also experiencing a problem with waking my system from sleep. Same as more people are experiencing, system wakes up but display does not go on.
In my theory it is linked to power states of the graphics card, but have not be able to fix it. It WILL wake from sleep after i ran software that heavily uses the card. For example a Unigine 3.0 Benchmark. From a clean boot, it will not wake from sleep. This would explain why, because the GPU is still in a low pstate. When stressing it a bit, it will wake. But only until the next reboot.
Does this sound plausible? My system is i3770, ga-z77-ds3h, MSI 660Ti PE OC, 16GB 1600mhz RAM.
PS. FCPX runs, but not stable, quite laggy actually. It will hang occasionally (Open GL error).
@dtrvndrn: Could you please share with us your bios settings/work flow for installing OS X?
I am now trying to do a clean install of os x 10.8.2 and then for graphics just install the nvidia drivers.
EDIT: After clean install, Had sleep working for a while, after i patched the drivers (geforce and cuda), this stopped working. However, FCPX seems to be working perfectly without any open GL errors. I'm happy, since sleep is not one of my priorities for this system. Still if anyone knows if above theory could be correct, please respond.