maxswjeon

For anyone using this board - the internal USB LED Controller is the culprit, so disable it with USBMap.

Current RTC0 Device checked with MaciASL is defined as below. Device (RTC0) { Name (_HID, EisaId ("PNP0B00") /* AT Real-Time Clock */) // _HID: Hardware ID Name (BUF0, ResourceTemplate () { IO (Decode16, 0x0070, // Range Minimum 0x0070, // Range Maximum 0x00, // Alignment 0x02, // Length ) }) Name (BUF1, ResourceTemplate () { IO (Decode16, 0x0070, // Range Minimum 0x0070, // Range Maximum 0x00, // Alignment 0x02, // Length ) IRQNoFlags () {8} }) Method (_CRS, 0, Serialized) // _CRS: Current Resource Settings { If ((HPEN == One)) { Return (BUF0) /* \_SB_.PCI0.SBRG.RTC0.BUF0 */ } Return (BUF1) /* \_SB_.PCI0.SBRG.RTC0.BUF1 */ } } How should I apply it? Remove the BUF1?

Basic Information Hardware CPU: AMD Ryzen 5600X MB: AsRock B550M Pro4 RAM: Samsung DDR4-3200 32GB x 4 (Total 128GB) GPU: AMD Radeon RX560 4GB Ethernet: Realtek RTL8211 Bluetooth: BU-4096 (Broadcom BCM20702A0 Based) Software My EFI setup is based on Dortania's guide (I would use olarila's if I knew before!!) macOS Version: Ventrua (13.4.1) SMBIOS Platform: iMac18,1 Kexts AMDRyzenCPUPowerManagement AppleALC AppleMCEReporterDisabler BlueToolFixup BrcmFirmwareData BrcmPatchRAM3 Lilu RadeonSonsor RealtekRTL8111 RTCMemoryFixup SMCAMDProcessor SMCRadeonGPU USBToolBox UTBMap VirtualSMC WhateverGreen Problem Everytime my system reboots / starts after shutdown / sleep, it does not boot at all. I suppose it fails to init (POST) after shutdown. CPU and DRAM Error POST Error LED are lit up on start. CMOS Reset by removing the coin battery (or at least unplugging the AC power cord and waiting 10 ~ 20 seconds) work. Some say it is RTC problem, so I tried to enable DisableRtcChecksum, but it didn't work. Tried RTCMemoryFixup too, but it didn't work. Please help. Additional information request are welcome. Thanks for reading long post.