4/7/2023 0 Comments Brightness control macThe same fix should be rolled into a future "official" Clover build from sourceforge at some point. This is "fixed" in my latest build of Clover available from my bitbucket site: Clover_v2.4k_. Because EDID injection is done by injecting AAPL00,override-no-connect property on the IGPU, and ist/Graphics based injection (including ist/Graphics/EDID) does not work when using ist/Devices/Properties, you must inject EDID by using only ist/Devices/Properties. Note: With the use of WhateverGreen.kext, ist/Devices/Properties is used to inject all IGPU properties. You must patch the actual EDID data itself. That setting is ignored if you're specifying an EDID via ist/Graphics/CustomEDID or ist/Graphics/EDID/Custom. Note: You cannot patch a custom EDID with the EDID/ProductID setting. Just set ist/Graphics/EDID/Inject=true, and ist/Graphics/EDID/ProductID=0x9c7c. If Clover can automatically detect your EDID, the easy fix is to change your ist such that Clover automatically injects a custom EDID with patched product-id. To fix it, you must inject a patched EDID. Although the patches used here will accomplish the correct FxxTxxxx profile selection in AppleBacklight, certain IDs have special case code (somewhere) that cause the backlight to not work. Some product/display-IDs as published in EDID present a problem. Ones: Default will be used (0x710 for Ivy/Sandy, 0xad9 for Haswell/Broadwell) If you're not familiar with MaciASL, read here:įor example, the backlight PWMMax is configured by changing: dsl code is advanced, I'm going to assume you already know how to do it. You will find SSDT-RMCF.dsl in the main guide/hotpatch repo. This can be done by providing an SSDT-RMCF.aml in ACPI/patched. In this case you will need to provide a custom LMAX, since the PWMMax determined based on device-id will not match your ig-platform-id. One example would be Haswell ig-platform-id 0xa2e0008, which uses 0x56c instead of the typical 0xad9 (as used by 0xa260006). This is especially true if you're not using the typical ig-platform-id and your ig-platform-id uses a different PWMMax. In certain cases, you may wish to modify the PWMMax value used to match the specifics of your framebuffer. This example assumes it was downloaded and extracted in your ~/Downloads folder: For many laptops, the IGPU (formerly GFX0) device is defined in an SSDT, not DSDT, and since SSDT-PNLF is dependent on this device already being defined, the SSDT-PNLF.aml must load after the OEM SSDT that defines it.Īfter extracting the ZIP install AppleBacklightFixup.kext to /L/E. Also, it must be loaded *after* the OEM SSDTs. If you're using SortedOrder in your ist, make sure you add SSDT-PNLF.aml to it. It will not work if your IGPU is not at _SB.PCI0.IGPU.Ĭopy the SSDT-PNLF.aml to your EFI/Clover/ACPI/patched (on your EFI partition). Note: If you already have patched your DSDT (or SSDT) with a "Brightness" patch (PNLF), you must remove it! Same if you're using Clover's AddPNLF_1000000 or AddPNLF (in ist/ACPI/DSDT/Fixes).Īlso Note: The SSDT-PNLF.aml assumes that GFX0 (or VID on Thinkpads) is already renamed to IGPU. AppleBacklightFixup.kext installed to /L/E To use this technique requires three components: You probably already have it from following the laptop guide: Note: AppleBacklightFixup.kext requires Lilu.kext. You will find AppleBacklightFixup.kext in the Release folder (of the ZIP) and SSDT-PNLF.aml in the root. CoffeeLake graphics/brightness control is still a work-in-progress.ĭownload the latest AppleBacklightFixup.kext and SSDT-PNLF.aml from bitbucket: It will work with Arrandale, Sandy Bridge, Ivy Bridge, Haswell, Broadwell, Skylake and Kaby Lake. This guide is only for Intel graphics laptops. SSDT-PNLF.aml to activate the AppleBacklight kext a single pre-built AppleBacklightFixup.kext This guide will simplify it by using two components that work together to create the solution: That guide can be a bit complex for the novice. I wrote about how to use a patched AppleBacklight.kext or AppleBacklightInjector.kext a while ago: After you have working brightness via SysPrefs->Displays, refer to the original guide for activating the brightness keys.īut as you probably already know, IntelBacklight.kext and ACPIBacklight.kext were broken by the 10.12.4 update. Note: The guide above is still useful for mapping your brightness keys. There is the original backlight guide using ACPIBacklight.kext or IntelBacklight.kext here: This is going to be a quick guide for how to implement backlight control for laptop internal displays on macOS/OS X. Building a CustoMac Hackintosh: Buyer's Guide
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