i searched also for the q77m-d2h and found 2 posts from happy mavericks users:
+1
Page 20 on mavericks guide
Working for my GA Q77M-D2H mobo. I used the unibeast > multibeast upgrade method. iMessage stopped working after the update but it was easily remedied with the NVRAM 1.1.2 fix. Also, I just had to go into the Sounds settings and choose internal speaker for it to have sound. This update has autosleep working again which was broken by 10.8.5 supplemental. After updating to 10.8.5 I had some difficulty getting USB 3.0 working but that didn't seem affected by this update so I just left it out of multibeast. Really happy with my hack right now!
Multibeast Options:
DSDT Free
ALC887/888b Current
HDA Enabler
3rd Party SATA - Not sure if I needed this one but it was part of multibeast preconfiguration.
FakeSMC
FakeSMC Plugins
Fake SMC HWMonitor Application
Intel - hnak's AppleIntelE1000e
AppleRTC Patch for CMOS Reset
Chimera v2.2.1
Basic Boot Options
Generate CPU States
Hibernate - Desktop Mode
Use KernelCache
1080p Display Mode
Mac Pro 3,1
Tonymacx86 Black
page 21:
Thanks it is working fine after the upgrade just had to run Multibeast to add Audio and Network on my GA-Q77M-D2H.