![]() It shouldn't matter much, as none of the tests benefit from large amounts of RAM (preferring throughput instead), and the tighter timings may even give a very slight boost to performance. Refer to your specific generation in the config.We equipped the AMD Ryzen platform with 2x8GB DDR4-3200 CL14 memory because our normal 2x16GB CL16 kit proved troublesome for some reason.DeviceProperties -> Add -> PciRoot(0x0)/Pci(0x2,0x0) has been correctly setup.kextstat | grep -E "Lilu|WhateverGreen".To verify if they loaded correctly in macOS, run the below command(if nothing is outputted, the kexts are not loading).Lilu and WhateverGreen are present under EFI/OC/Kexts and in your ist.We'll need to go over some prerequisites first: Now that we've gone over the basics of setting up an iGPU, let's get into some deeper topics. Open your ist and add this new entry under PciRoot(0x0)/Pci(0x2,0x0): Key Now that we have our device-id, we'll do the same thing as before with ig-platform-id. # Next reverse it, but keep the pairs in tact # First, remove 0x and pad it to 8 bits by using 0's in front of it Using Intel's ARK page (opens new window), we can see the following: ![]() To determine whether you need a new device-id injected, you'll want to compare WhateverGreen's list of supported IDs (opens new window) to what you have.įor this example, lets take a look at the i3-4150 with an HD 4400 iGPU. Why this is important for us is that Apple's iGPU drivers have a limited amount of IDs even though the kext itself can support much more. This is the location of Intel's iGPUs relative to the IOService path, and has been consistent as far back as Yonah series CPUs(2007+): Keyĭevice-id is what macOS, or more specifically IOKit, uses to determine which devices are allowed to connect to which drivers. Now we'll want to add a new Entry called PciRoot(0x0)/Pci(0x2,0x0). # And now you have your final framebuffer profileįrom here, lets open up our ist and head to DeviceProperties -> Add. # Next, reverse the order but keep the pairs together # To start, remove the 0x and then space them out in pairs If you scroll to the bottom of this list, you're also given some recommended options: Mobile vs desktop), VRAM requirements, etc. Here we're given a list of all supported framebuffers in macOS, including the hardware type(ie. We'll first want to scroll down the manual until we hit the Intel HD Graphics 4200-5200 (Haswell processors) (opens new window) entry. A full list of these values can be found in WhateverGreen's manual: .md (opens new window)įor this example, lets try to find a framebuffer compatible for a desktop HD 4600 iGPU. The format of this entry is hexadecimal, and is byte swapped from the actual value. Note: on Sandy Bridge, we use AAPL,snb-platform-id instead.To specify a framebuffer personality in macOS, we use the DeviceProperties section in OpenCore to add an entry called AAPL,ig-platform-id These personalities determine many things including number of displays, types of displays allowed, location of these displays, minimum VRAM required, etc, and so we need to either hope one of these profiles matches our hardware or try to patch it. The reason why this is important is due to the amount of iGPU configurations Apple supports in the iGPU kexts, specifically known as framebuffer personalities. Commonly seen with iMacs that include dGPUs.iGPU is solely used for internal compute, and dGPU handles all display outputs.iGPU is only used for internal displays, and dGPUs are handling external displays.Commonly seen on Mac Minis, MacBook Airs, 13" MacBook Pros and iMacs without a dGPU.Property used by macOS to determine the framebuffer profile with Sandy Bridgeīefore we jump too deep into this rabbit hole, we should first explain what we're doing and why we need to do this.īy default in Macs with iGPUs, there are a few configurations: Property used by macOS to determine the framebuffer profile with Ivy Bridge and newer Kext used to patch GPU drivers to better support PC hardware Profile in a framebuffer which determines how the iGPU will act Refers to the kext used in macOS to drive a GPU Note this guide is not a beginners tutorial, we recommend you follow the recommend iGPU properties listed in the ist section of the guide to start off. This guide will be a more in-depth look into patching macOS to support more hardware variations of Intel's iGPUs including proper display out, fixing color tint issues, HiDPI issues and etc.
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