2022.07.06 2023.01.12

NEC VK23VB-T(Lenovo X260,T460)へのVenturaインストール（HD520の適応の仕方）

alpha

Mr Mackintoshなどから、Ventura DBのパッケージを落とします。
macOS Ventura 13 Full Installer Database. Download Directly from Apple!
パッケージを開き、インストーラーを出した後に、
いつもどおり、USBメモリをUSB名で消去した後に、以下のようにインストールします。

% sudo /Applications/Install\ macOS\ Ventura\ beta.app/Contents/Resources/createinstallmedia --nointeraction --downloadassets --volume /Volumes/USB

WhatEverGreenは1.6.0から、SkylakeのHD520をKabylakeに偽装する機能が付きました。
原典は
GUIDE How to Enable Intel Skylake Graphics (Intel HD Graphics 515, 520, 530, 540, 550 and 580) on macOS Ventura and Later
（この方法は過去への互換性がありませんので、Ventura以降の設定となるようです。）
以前のDeviceから、変更する点は以下のところです、

Devices	Key	Value	Type	Notes
PciRoot(0x0)/Pci(0x2,0x0)	AAPL,ig-platform-id	00001B59	DATA	Required for Laptops if desk top,set 00001259
	device-id	16590000	DATA	Sets Fake Device ID for Unsupported Device ID in macOS.
	enable-hdmi20	01000000	DATA	Enables CoreDisplayFixup functionality via WhateverGreen.kext. Enables HDMI 2.0 patches. This prevents black screen for HDMI in UHD resolution with 60FPS or more. Usually relevant for 4K/UHD/QHD panels. If your Laptop has a 4K/UHD/QHD panel, you’ll need to use this boot arg. If you get “gIOScreenLockState3 error”, you’ll need to use this property.
	framebuffer-fbmem	00009000	DATA	Specifies framebuffer memory size. This is a memory which is reserved for the framebuffer. 00009000 Sets framebuffer memory size to 9MB 00000003 Sets framebuffer memory size to 48MB
	framebuffer-patch-enable	01000000	DATA	Enables framebuffer patching.
	framebuffer-stolenmem	00003001	DATA	Specifies stolenmem. This is a memory which is reserved for the IGPU. Prevents kernel panic due to less DVMT size set in BIOS/UEFI. 00003001 Sets framebuffer stolenmem size to 19MB Usually relevant for Laptops where the DVMT-prealloc cannot be set due to hidden settings under BIOS/UEFI. 00002002 Sets framebuffer stolenmem size to 34MB Usually relevant for 4K/UHD/QHD panel where the DVMT cannot be set due to hidden settings under BIOS/UEFI and variables cannot be modified using UEFI shell method. However, few 4K/UHD/QHD Laptops such as Lenovo Yoga, may require BIOS unlocking.
	hda-gfx	onboard-1	STRING	Sets hda-gfx to onboard-1 on IGPU. This property provides HDMI/DP function and can also fix crash issue when Hot plugging.