I am already upgrade from 10.7.5 (system definition iMac 12,2, fully functional - sleep, wake, etc - no problem) to Mavericks (unfortunately I don't have downloaded ML from Apple Store) on an F12 Z68X-UD3H-B3, i5-2500K, HD 6850, WD SATA 1TB, apple USB keyboard and USB mouse. I prepare USB with Mavericks (UniBeast 3.0.1), remove HD 6850 and install new GeForce GFX 760 (
http://www.amazon.com/dp/B00CU9GOAE/ref=as_li_ss_tl?ie=UTF8&tag=tonymacx86com-20). Install Mavericks with no problem, prepare with MultiBeast - Mavericks 6.2.1 + downloaded DSDT:
MultiBeast Configuration - 2014-03-31 08:49:39
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Quick Start > UserDSDT - /Users/xxxxxxxx/Desktop/DSDT.aml
Drivers > Audio > Realtek ALCxxx > With DSDT > ALC889
Drivers > Disk > 3rd Party SATA
Drivers > Misc > FakeSMC v6.0.1123
Drivers > Misc > USB 3.0 - Universal
Drivers > Network > Realtek > RealtekRTL81xx v0.0.90
Drivers > System > AppleRTC Patch for CMOS Reset
Bootloaders > Chimera v2.2.1
Customize > Boot Options > Basic Boot Options
Customize > Boot Options > Generate CPU States
Customize > Boot Options > Hibernate Mode - Desktop
Customize > Boot Options > Instant Menu
Customize > Boot Options > Use KernelCache
Customize > Boot Options > 1080p Display Mode
Customize > System Definitions > Mac Pro > Mac Pro 3,1
Customize > SSDT Options > Sandy Bridge Core i5
Customize > Themes > tonymacx86 Black
System boot, application works (except Apple DVD player - error [-70002] and non functional eject button) but am having an issue with sleep where the system goes to sleep fine, but when I try to wake it up (usb keyboard or mouse or power button) I have no video output. (monitor Samsung S20A300, connected to DVI)
I try another system definition (iMac 12,2, MacMini 5,1, iMac 13,1) but no luck. I add darkwake=0, changed value to 8 - no effects, no signal in monitor with all combination. Please help me, because I don't have any new idea.
GFX 760 is fully recognized by system.
PS. Sorry for my bad english.