Jake Lo

You able to obtain IP and MAC address from LAN? Does it have SD Card reader? Does it have Display port? HDMI video / Audio working? Sleep / wake OK? Does it have wireless card?

Hmm, layout-id shows as zero even though DSDT has it at 12. Try this Config config.plist.zip

Ok, download and install Clover This will get you the latest Clover. Reboot. At the Clover GUI. Press F4 Continue booting to OSX Run the debug script again Compress and attach the file

You didn't follow instruction from above You still have AppleHDAIDT.kext in /L/E and no sign of the kexts I attached added to /EFI/Clover/kexts/Other

You should first upgrade Clover to the latest, verify it can still boot. Post this so I could have an idea what you currently have

post the DSDT, IOReg and the output of DPCI (attached) List the items you want added and we'll try to add them for you there's no easy way to show you how if you don't already have some experience with DSDT patching dspci.zip

post debug issue here

If you have AppleHDA_IDT.kext in /L/E or /S/L/E, remove it In Config file, disable any AppleHDA hot patches under kextToPatch Add the attached kexts to /EFI/Clover/kexts/Other Hopefully should fix audio and enable Caddy HDD/SSD FixAudio&Caddy.zip

Make sure Optimus is enabled. what's the display resolution? The Config file you have in Clover folder is incomplete. You should replace it with the one inside /Clover/ACPI. Move that to /Clover replacing it

No, don't do that. Remove AppleHDAIDT.kext from /L/E add these to /EFI/Clover/Kexts/Other audio.zip

the kexts are in /EFI/Clover/kexts/Other/CopyToLE and must be all be copied to /Library/Extensions repair permissions and rebuild cache

Don't see why it would break audio. DSDT uses same layout-id as the other DSDT. Repair permissions and rebuild cache Reboot

Use this DSDT should fix the graphics issue and user claimed the LAN is working too.

Did it hang there? seems it's different from the OP try this config. added the patches to disable the kexts I listed above Update: error is port limit patch, fixed config.plist.zip

Remove from /S/L/E and test AppleHPM AppleIntelLpssI2C AppleIntelLpssI2CController

You need to create a _DSM method for each device and you need to determine the location of the device. You'll need know how to patch DSDT and read IORegistry to determine the location of the device. example: For my Wifi card, looking through IORegistryExplorer.app, I'll find it under RP04->PXSX So I need to create a _DSM Method in my DSDT under RP04/PXSX

The BCM5722D.kext included is for the Broadcom card but it's known to not work properly for E5420. FYI, there's no other known kext for it I'm afraid. You'll just have to a wifi or USB ethernet that's supported.

Oh, you need to remove IntelBacklight.kext from /EFI/Clover/kexts/Other. No longer needed. As for LAN, which does it have? Intel, Realtek, Broadcom...etc?

I'm assuming you have low Resolution 1366x768 since you didn't specify as requested. Replace the DSDT/SSDT and Config.plist with the attached Install the kext to /Library/Extensions Repair permissions and rebuild cache E5420_HS.zip

Hervé had a short DSDT guide awhile back about how to patch devices just like this but I can't seem to find it anywhere. It'll definitely be able to help you. @Hervé and @Bronxteck, do you have any idea?

@Hattori When using @black.dragon74 instruction, had you tried with iMac Display other than MacBookAir or MacBookPro?

@Chính Xuân Mai If you're going to use the files from Leone, make sure to leave out the SSDT.aml as it's for an i7 system

No. Dell systems don't have whitelisting so no custom BIOS are required. You probably just need 4 kexts: Wifi: Lilu.kext & AirportBrcmFixup.kext in /EFI/Clover/kexts/Other Bluetooth: BrcmPatchRAM2.kext & BrcmFirmwareRepo.kext in /L/E

Attach the Clover folder and specify your display resolution.

You need to apply [igpu] Rename GFX0 to IGPU to all the SSDT-5 as well to balance it out. I believe the main reason is that the AMD ist fully disabled. I see it's still loaded in the IOReg file. If applying patch to SSDT-5 still didn't work Try applying [gfx0] Disable from _Reg (DSDT) and or [gfx0] Disable/Enable on _WAK/_PTS (DSDT)