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Dell Inspiron N3421 with Sierra 10.12


dunhill

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Hi experts,

 

I am sorry for my bad English and I am newbie of Hackintosh

 

My laptop is Dell Inspiron N3421 with configuration as bellow:

RAM 4GB

CPU Intel Dual Core i3-3217U, 1.8GHz
Display Hybrid Intel HD4000 and nVidia GT625M
Sound Realtek ALC282
WiFi Atheros AR9565
LAN Realtek RTL8100E

 

I use config.plist by Rehabman and collect kexts from many sources to install macOS 10.12 successfully on my laptop.

But the screen is always flickering, and I think that nVidia GT625M is not disabled.

I have read many times instruction by Rehabman to disable nVidia GT625M but I do not understand, it is very complicated for me to do.

Could some one please help me to patch DSDT and SSDTs to disable nVidia GT625M to reject screen flickering. Please see the attached pictures and EFI file for details.

I am sorry if the post is wrong place 

 

Thank you very much

 

20200312_224903.jpg

20200312_224956.jpg

20200312_225018.jpg

20200312_225118.jpg

EFI.zip

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Ok, then layout 0x01660003 that you're using is indeed the correct one. The being said, a few things to be said about your Clover config. It's probably an old one you picked up somewhere and it needs some adjustment. Proceed as described below, using Clover Configurator app:

ACPI section:

  • Add patches that rename legacy USB controllers from EHC1/EHC2 to EH01/EH02
  • Select FixDarwin7 fix
  • Remove Drop OEM + Generate P StatesGenerate C States (these are for C2D/C2Q/1st gen Core platforms)
  • Apply Drop tables for SSDT with id CpuPm and Cpu0Ist
  • Select FixHeaders

Boot section:

  • Remove boot parameter kext-dev-mode=1 (it was only for Yosemite and has long been obsolete and useless)
  • Add boot parameter nv_disable=1

Devices section:

  • Remove all those zero/null values entered in the 8 x Faking ID fields; leave them blank
  • Remove those nVidia properties in the Add Properties part

Graphics section:

  • Remove NVCAP value (it's for nVidia GPUs)
  • Remove Display-cfg value (I don't believe this to be required at all)
  • Remove ig-platform-id value (should be taken care of by Lilu + WEG)

Kernel and kext Patches section:

  • Add AppleRTC patch

 

Once you've finished adjusting your Clover config:

  • generate your CPU-specific power management SSDT with Pike R Alpha's well-known generator script/tool (you can Google for it) and copy it to ACPI/patched folder of your Clover EFI.
  • remove AppleBacklightFixup kext. Not required with Lilu + WEG
  • check that you use latest versions of your add-on kexts, especially Lilu + WEG; update as/if required
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Thanks for your help

 

I have completed as your instruction, but there is no improvement

Without  ssdt.aml, my laptop could boot but the screen stills flickering

With ssdt.aml, my laptop could not boot into Sierra

Please see my pictures and EFI folder

 

20200316_204736.jpg

20200316_205222.jpg

EFI.zip

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