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Dell Precision M4800 - all hardware


howoarang

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OK, I need some advice or help with it. I try to explain my steps, which I done:

 

1) Install kexts to S/L/E: FakePCIID.kext, FakePCIID_Intel_HD_Graphics.kext, FakePCIID_Intel_HDMI_Audio.kext

2) add 0x04128086 to FakeID->IntelGFX (into config.plist)

3) add binary patch for AppleIntelFramebufferAzul to KextPatches (into config.plist)

 

Result:

- Laptop display works with full GPU Intel HD4600 (1536MB), it's recognized properly as internal display 15,5" (1920x1080)

- Backlight is at highest level and it can't be reduced by keys FN+Down, FN+F3

- Audio doesn't work

- Video HDMI or DP output doesn't work

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If HDMI output does not work, then you probably did not apply the patch properly. I tested it myself directly on the Azul FB kext and I can guarantee that it works. Can't say about DP since my E6440 does not have any such port.

 

I'd have to check for audio, it's been a while since I put my laptop on a TV screen for testing but if memory serves me right, I don't recall getting HDMI audio working... Maybe it also depends on the AppleHDA patch.

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Just one patch is needed I think. What aboud SSDT for GPU nVidia? It is necesary to patch this SSDT to disable discrete GPU, some _OFF method? Because if I enable "Switchable Graphics" in BIOS, system boots and run on Intel HD4600, but in About this Mac I see 2 GPU: intel and nvidia too.

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