Quick Fix for Intel HD 4600 Graphics Acceleration on 9 Series Motherboards
Early adopters of 9 Series motherboards are finding that QE/CI isn't working through Intel HD 4600 natively, causing some integrated graphics issues with both installation and post-installation. This is because Apple hasn't released any Macs with the chipset, hence chipset support is absent in OS X as of 10.9.3/10.9.4, namely in /System/Library/Extensions/AppleIntelFramebufferAzul.kext.
Luckily it's fixable via a replacement kext or id.
The specific problem is MEI. MEI is now called dsdt/HECI. dsdt/ssdt injection does not work. An Info.plist edit is required:
To achieve full graphics acceleration on 10.9.3+ via HD 4600 on 9 Series motherboards, download the attached patched version and install via KextBeast or the like.Code:add: IOKitPersonalities/AppleIntelMEIDriver/IOPCIPrimaryMatch/0x8cba8086
Credit to RehabMan and Toleda for finding the fix.
Related:
Quick Fix for Onboard Audio on 9 Series Motherboards
EDIT: This fix is now available in MultiBeast 6.5+

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