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Dell Latitude E6420 Audio and Wifi not Working, and can't boot from Mac


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Hey all, thanks in advance for your effort,


I installed Olarila High Sierra 10.13.6 on My Laptop Dell Latitude E6420

using this EFI file EFI file


Installation done successfully,


but no drivers working, audio and WiFi

also, i can't boot from High Sierra automatically, i booting via USB and choose boot from High Sierra


My Laptop Specs shown in the attached images.


Please help me to solve this issue.









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Welcome to OSXL!

From your screenshots, your max display should be 1366x768 which means you should be using the lowRes DSDT instead of the default HiRes DSDT, but as long as you graphics looks fine, just leave it I guess.

Looks like you have an Intel Wireless, head over here and see if you're wifi is supported, otherwise, replace with an DW1510, DW1550 for Wifi / BT combo.

For audio, add the following kexts: Lilu.kext, AppleALC.kext and Whatevergreen.kext

If you have added AppleHDAIDT.kext to /L/E or /S/L/E, remove it, repair permissions and rebuild cache

Finally, in the Config file, under KextToPatch, disabled all the patches for AppleHDAIDT

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