Jake Lo

Can't help you if you don't give information we asked for. See post #9 above

You should have no issue upgrading to 10.10.5 with combo update. Make sure to add nullcpupowermanagement to /extra/extensions prior to the update as stated in my guide. Then install the updated files and then remove NullCPU... If you want to stick with Chameleon loader when installing El Capitan, this is a good guide, just use your current /Extra folder as bootpack. Only significant change is that you need the Enoch branch of Chameleon and SIP disabled, all covered in Hervé's guide. Otherwise, I have a Clover guide for El Capitan, use the E6420 bootpack but replace DSDT with your current DSDT.

Did you install/copy the kexts in /EFI/Clover/Kexts/Other/LE to /Library/Extensions or /S/L/E, then run the permission.sh?

See here for info.

@davidkoscso You need to remove VoodooHDA and AppleHDADisabler if you have them installed. Then install AppleHDA_ALC292 to /S/L/E, it won't load from /Clover/Kext. You'll also need to keep the vanilla AppleHDA in /S/L/E, restore it if you removed it. I checked you DSDT, there are lots of error. What patch did you apply to them? You'll need to use layout-id=1 under HDEF also. Please list your System's specs: CPU Display resolution GPU ...

Here, try if it works. I see you renamed EHC1 and EHC2 to EH01 and EH02. Does all your USB ports work? DSDT-sefki21.aml.zip

See if this works for you too. I have not test it personally. DSDT.aml.zip

Try this, patched Wern's DSDT with audio layout-id to 0x0C. Replace and rename as DSDT.aml dsdt-wern.aml.zip

No, that kexts is required. Check your BIOS. Set it to 'Load Default', apply and then set SATA Operations to AHCI. Also check that CPU XD is enabled.

Replace DSDT with this by Wern. Rename it to DSDT.aml

See if you have FileNVRAM.dylib in /Extra/Modules, remove if found.

There are some guide available through google search using TransMac to access HFS file from Windows.

Please upload your DSDT here. Compress it and use the 'More Reply Options'.

Get the Yosemite vanilla or patched kernel here graciously uploaded by Hervé.

Try applying the USB3_PRW 0x0D by RehanMan to DSDT

Your Broadwell system requires that DVMT set to 96MB. See my E7450 guide here how to do that. See here to create your Installer, use the E7450 bootpack, but leave out the DSDT/SSDT in ACPI/Patched folder. Once you're able to boot to Clover, hit F4 to extract the raw files. Compress and upload /EFI/Clover/ACPI/Origin folder here, I'll try to patch them for you. The nvidia card will probably need to be disable with DSDT patching. The wireless card will need to be replace for a supported one.

ahalol PM'd me that it's resolved with 'Simple apply the USB3_PRW 0x0D by RehanMan to DSDT will fix this issue.' what this does is remove _PRW methods to prevent instant wake

Are you using Clover or Enoch branch of Chameleon as boot loader? You could patch the AirPortBrcm4360 with SMBIOS MBP6,2 to load DW1520.

Try different Fn keys to see if Brightness control works. If non works, could be you need to replace your kexts with ElanTouch. USB ports, strange only one works. Have you confirm the other work under windows? Try removing GenericUSBXHCI.kext. Not sure what the issue is with iTunes, seems you have full QE/CI. As for sound after sleep, could be an EAPD issue, try this. You'll need to know the node-ID for this.

Perhaps manually patching the graphics kext rather than using the patch-on-the-fly which requires cache to work.

Did you install clover loader according to this config? Install Clover in the ESP Bootloader/Install boot0af in MBR CloverEFI/CloverEFI 64-bits SATA or Install for UEFI booting only Install Clover in the ESP Drivers64UEFI\OsxAptioFixDrv-64 You should use the 1st, the second is for UEFI BIOS only and this model has some issue and not working right. Make sure to set your BIOS correctly too. Set to 'Load default', apply then set SATA Operations to AHCI. Leave the rest as is.

When you load the EFI partition, does it load from your root/EFI folder or the hidden EFI partition? Make sure it's the hidden partition.

Reason there's no kext folder is because you need to download the E6220 bootpack which contains Config.plist ACPI Kexts Place all these into EFI/Clover folder

Try these, one of the members had these files working. Archive.zip

The problem is your graphics is not loading requiring your BIOS DVMT set to 96MB. Make sure to set Bios Using Graphics UMA only