Part and function list
| Item |
Model |
Notes |
| CPU |
Intel i7 8700 |
| MotherBoard |
ASRock Z390 Phantom Gaming-ITX/ac |
TB3 might be working |
| WIFI |
DW1820A |
Apple Watch Unlock / Handoff Not Working |
| Bluetooth |
DW1820A |
Good |
| Memory |
Asgard 32GB * 2 |
| dGPU |
AMD RX 6600 |
| System |
macOS 13.2.1 |
OTA upgrading working |
Configs
BIOS Settings (BIOS Version 4.30)
| Location |
Item |
Default Value |
My Value |
Reason and Result |
| Advanced |
Fast Boot |
Disabled |
Disabled |
DK. |
| Advanced |
CFG Lock |
Disabled |
Disabled |
Need more resarch |
| Advanced |
VT-d |
Enabled |
Enabled |
Enable quirk DisableIoMapper then no need to disable VT-d. |
| Advanced |
CSM |
Enabled |
Disabled |
Disable it seems to be useful when using external GPU. |
| Advanced |
VT-x |
Enabled |
Enabled |
Need more research |
| Advanced |
Above 4G decoding |
Disabled |
Disabled |
Need more research |
| Advanced |
Hyper Threading |
Enabled |
Enabled |
Need more research |
| Advanced |
Execute Disable Bit |
Enabled |
Enabled |
Need more research |
| Advanced |
EHCI/XHCI Hand-off |
Disabled |
Enabled |
Boot stalls if with USB devices connected. Seems to be the only necessary change in BIOS. |
| Others |
OS type |
No option |
No option |
No option |
| Advanced |
Intel SGX |
Enabled |
Disabled |
Could be useful by disabling it. |
| Security |
Intel(R) Platform Trust Technology |
Disabled |
Disabled |
Need more research. |
| Advanced |
Thunderbolt |
Enabled |
Enabled |
Following others research, not tested. |
| Advanced |
iGPU Multi-Monitor |
Disabled |
Disabled |
Probably necessary for those using dGPU. |
Functions
Bluetooth working
OpenCore Config Details
Not all the configs were explained here
ACPI
ACPI SSDT Patch
SSDT-AMAC fix RTC bug
macOS requires `RTC._STA` to return `0x0F`, meaning RTC enabled. While Asrock BIOS (ASUS and some other compaines too) enabled AWAC and disabled RTC by default (Probably for Windows).
After reviewing the codes, I replaced the old renaming hotpatch with SSDT-AWAC SSDT patch.
The renaming hot patch replaced the ```If ((STAS == One))``` of `RTC._STA` in DSDT with ```If ((0xFF || 0xFFFF))``` , so the RTC._STA will always return `0x0F`. It might lead to a conflict in the future, since both RTC and AWAC are enabled at the same time.
If you failed to boot, you may find the renaming method in an older commit, or use ```SSDT-RTC0``` instead.
Reference: [
FIX for boot hangs after BIOS update (ACPI PATCH)](https://www.tonymacx86.com/threads/fix-for-boot-hangs-after-bios-update-acpi-patch.275091/page-7#post-1972443), [ACPISamples](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples)
SSDT-PLUG enables Native Power Management
XCPM was said to bring better performance ( or sth blah blah ). At least it's harmless.
Check status by ```sysctl -n machdep.xcpm.mode```. 1 for enabled.
You might need to change PR00 to CPU0, depending on your MB model. You could query this by ```ioreg -p IODeviceTree -c IOACPIPlatformDevice -k cpu-type -k clock-frequency | egrep name | sed -e 's/ *[-|="]//g'```
You might need to enable Intel SpeedStep in your BIOS. For my MB it's enabled by default.
Reference: [Fixing Power Management](https://dortania.github.io/OpenCore-Desktop-Guide/post-install/pm.html), [SKL+平台XCPM+HWP完整原生电源管理探究](https://www.misonsky.cn/102.html), [macOS Native CPU/IGPU Power Management](https://www.tonymacx86.com/threads/macos-native-cpu-igpu-power-management.222982/), [SSDT-PLUG.dsl](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-PLUG.dsl)
SSDT-PPMC fix energy saver options
This SSDT fix seems to be harmless.
You could verify it by looking into Preferences. You should be able to see 5 options (including power nap) instead of 2.
Kernel
Quirk
- DisableIoMapper = YES.
This option is a preferred alternative to dropping DMAR ACPI table and disabling VT-d in firmware preferences, which does not break VT-d support in other systems in case they need it.