Usually relevant for 4K/UHD/QHD panels.This prevents a black screen for HDMI in UHD resolution with 60FPS or more.Enables CoreDisplayFixup functionality via WhateverGreen.kext.For example, connecting to a 2K/4K display with HDMI 1.4, otherwise, the system just hangs and the built-in display will remain black when plugging the HDMI cable.Fixes the infinite loop when establishing an HDMI connection with a higher pixel clock.Usually required by Laptops where the BIOS is locked and the variables cannot be modified using Shell.Fixes Kernel Panic due to incorrect amount of DVMT pre-allocated memory.You can use ' -igfxblr' in boot args instead of this property.Fixes Backlight registers on KBL, CFL and ICL platforms.Usually required by Laptops with a Sharp Display and more refresh rate.This property on IGPU can fix the invalid link rate otherwise a kernel panic can occur due to a division-by-zero.Usually required by Laptops with lower clock frequency values such as 172.8MHz.This property on IGPU can be used to prevent a kernel due to an unsupported CD clock decimal frequency.Enables all valid Core Display Clock (CDCLK) frequencies on ICL platforms.This can fix display glitch after sleep/wake (HBR3).Required in case if the Laptop has more refresh rate than 60Hz.Required for Laptops having 4K Display, (HBR2).Required for Laptops having 1080p Display, (HBR).Required for Laptops having 1080p Display, (RBR).Specifies ig-platform-id which enables IGPU Graphics acceleration and support.Īll the possible values for the link rate are listed below.Therefore it is very important to ensure that your graphic is working with full QE/CI.

In case if you haven’t enabled QE/CI on your graphic card, you won’t be able to use your macOS smoothly and there would be lots of lags and artifacts, graphic-related issues, and poor refresh rate. It utilizes the complete Graphics capabilities. Quartz Extreme and Core Image (QE/CI) should work together to enable full acceleration on macOS’s GUI. In macOS, full acceleration requires that both Quartz Extreme and Core Image (QE/CI) should work together. Graphics enhance the performance and helps to work smoothly. MacOS supports a wide range of Intel HD Graphics (also referred to as iGPU) but some of them might not work out of the box if you have not followed the ist creation guide.īefore you start with this guide, please know something about the performance. By following this guide, you'll be able to achieve full QE/CI on your system. Fix Intel Iris Plus Graphics (Ice Lake) on macOS Big Sur and LaterĪn EliteMacx86 Exclusive Guide - This guide covers fixing Intel Intel Iris Plus Graphics (Ice Lake) on Laptops for macOS Big Sur and Later.

Intel iris mac