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How to make HD4000 VGA work?

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I made my HD4000 working with a DSDT patch to the GFX(changed to IGUP) section with the ig-platform-id=01620005, since I`m using I5-3570k a desktop version of HD4000, b.t.w. my MB is GA-Z77M-D3H-MVP. With this method injected I can change my Graphics Mem in BIOS with 32MB 64MB 96MB 128MB all work out of the box. But one thing the sleep seems not working as expected. The issues is every time I click sleep it goes to sleep but a few seconds later it wakes up and reboots. Dunno if this is USB related or sth. The most urgent business is I wanna make the VGA output work, I read it can be done through hack the binary file inside AppleIntelFramebufferCapri.kext. I can jump to the 01620005 buffer but I don`t know how to change it and what to change to. Really need some help. My MB has three video output ports they are DVI, VGA, and HDMI. How to hack this kext? I`m on Mac OS X 10.8.3 now. The file is attached below.AppleIntelFramebufferCapri.zip

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