- Feb 25, 2019
- ASRock - H370M-ITX/ac
- Vega 56
It seems that the chipset shared memory setting might be the cause to your sleep issues with bios v3.00:Using the BIOS v1.50 sleep/wake capability didn't work...
Using the BIOS v3.00 i was not able to boot anything with clover (don't know why). Can you share some screens of your settings?
[SUCCESS] Asrock H370M-ITX/ac and getting RX560 or RX580 to work with Intel graphics for full hardware acceleration on Mojave (and maybe High Sierra 10.13.6)UEFI-BIOS settings:
The board comes with BIOS version 1.20, there is an update 1.50 on the Asrock website. Usually it is good to stay updated but in this case I’ll recommend to stay on 1.20, because the 1.50 version seems to be unstable and I had restarts upon wake and things like that I couldn’t get fixed even with dsdt patches. So I just downgraded to 1.20 which runs fine.
Settings needed: Just the usual. Disable fast boot and security boot (everything Windows-related), disable vt-d and enable XHCI hand-off. Activate multi monitor support and set VRAM to 64MB to activate the Intel IGPU. From what I’ve read most people recommend 128MB but I find the 64MB setting to be more reliable, getting artifacts with settings below or above 64MB. 128MB may be needed for 4k support, though. *Update* BIOS V 3.00 with Mojave final release works fine with 128MB.