Xiaomi-pro-hackintosh: It takes much longer time to boot and shutdown after updating to Catalina

[vimcaw]

State the model
阐述您的机型

• Xiaomi Air 2018

State the version of the EFI
阐述您的EFI版本

• v1.3.5

Describe the bug
描述您遇到的问题

• It takes a very long time (About a few minutes) to boot and shutdown on Catalina.

Attach system.log
附上system.log

• Pivotal parts of boot log:

apfs_keybag_init:1583: failed to initialize volume keybag, err = 2
apfs_keybag_init:1583: failed to initialize volume keybag, err = 2
apfs_keybag_init:1583: failed to initialize volume keybag, err = 2
AGDCC: Unauthorized client 'PerfPowerService' (IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelFramebufferController/IntelFBClientControl)
IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0
AppleLMUController::smcReadKey Error: received error 0x84 when reading key 'MSLD'

[stevezhengshiqi]

@vimcaw Hi, firstly, it's a XiaoMi-Pro repository so there're would be several compatibility issues on XiaoMi Air.

A common difference between XiaoMi Pro and XiaoMi Air is the EC device in DSDT. XiaoMi Air has to rename its EC0 device or disable it and fake a new one, like SSDT-EC sample

Another difference is LGPA method, which controls the brightness key. It's recommended to find EFI specifically for XiaoMi Air.

[vimcaw]

@stevezhengshiqi Thank you very much for the detailed answer! It will teach me a lot of things.