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Dell 7480, help me!!!

Tường Nguyễn

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hello, I've successfully install High Sierra on E7480 i6600U. But i don't know choose what kext, now the touchpad does not working, i can't adjust brightness and sleep


Processor : i7-6600U Processor
Graphics Processor(GPU) : Intel® Integrated HD Graphics 520
Chipset : 6th Generation Intel® Core
Storage : 256GB Drive M2 2280 SATA
RAM : 8GB DDR4 SDRAM 2133 MHz; 2 slots supporting up to 16GB
Wifi : Intel
LAN : Intel I219-LM PCI-E Gigabit Ethernet Adapter
Audio : Realtek® High Definition Audio ALC293 (ALC3235)
USB 3.0 : Intel USB 3.0/3.1 xHCI Controller
Touchpad : Alps Multi-touch Touchpad v7 Hardware
Webcam : USB3.0 UVC HD WebCam
Card reader : Dual Pointing, 82 key with Smartcard, Contactless Smartcard, Fingerprint Reader,Thunderbolt 3
Monitor : 14" FHD (1920 x 1080) Anti-Glare, Camera & Mic, WLAN Capable



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Are you sure your audio is ALC293 and not ALC256?

Here, replace the Config file and DSDT.aml with the attached


Once booted, do the following:

Remove the following kexts from /L/E



Remove from /S/L/E <- duplicate from /L/E





Add to /S/L/E

VoodooI2CHID.kext & VoodooI2C ( you already got this one)



Repair permission and rebuild cache



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Disable Legacy Option ROMs if you have it enabled

You still have duplicates kexts, look at the kextcache log...

Remove from /S/L/E

  • AppleBacklightInjector.kext
  • AppleALC.kext
  • FakePCIID_Intel_HD_Graphics.kext
  • FakePCIID.kext
  • FakePCIID_Broadcom_WiFi.kext
  • BrcmPatchRAM2.kext
  • BrcmFirmwareRepo.kext

Remove EAPDFix.kext from /L/E and replace it with CodecCommander.kext for audio

Repair permission and rebuild cache

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