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Switchable Graphics HD 3000/AMD HD 6630m

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I've got a Sony Vaio PCG-71613W pretty much up and running on 10.9.2 except for graphics accelleration.


It's a Sandy Bridge i5 with 6GB of RAM, I've replaced the wifi card with an Atheros AR5B95 (AR9285) to get that working and got VoodooBattery working too.


I have no DSDT installation or anything like that.


The only things left are:


Problem 1 - No Kext Loaded for the Intel HD 3000 Graphics or AMD HD 6630m. There is no option in the BIOS to change virtual memory size to match the RAM (or anything else for that matter - thanks Sony!), I have identified the machine as all the different MBPs and Minis to try and get it to recognise and load the kext but all i get is:

$ system_profiler SPDisplaysDataType


    Intel HD Graphics 3000 Mobile:

      Chipset Model: Intel HD Graphics 3000 Mobile
      Type: GPU
      Bus: Built-In
      VRAM (Total): 7 MB
      Vendor: Intel (0x8086)
      Device ID: 0x0116
      Revision ID: 0x0009
      Kernel Extension Info: No Kext Loaded
          Resolution: 1920 x 1080
          Pixel Depth: 32-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes


      Chipset Model: Unknown
      Type: GPU
      Bus: PCIe
      PCIe Lane Width: x16
      Vendor: ATI (0x1002)
      Device ID: 0x6741
      Revision ID: 0x0000

Problem 2  - It seems to crash back to the login screen when I try to access 'About This Mac', but this could be related to problem 1.


Any ideas where to go from here?

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Just realised i'd missed out a load of info; i'm booting with GraphicsEnabler=No and IGPEnabler=Yes to try to enable the HD 3000, and the other way around for the AMD - no joy either way.

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