How to Fix Struggling to get Catalina upgrade working on clover or opencore. 9900K Z390 rx580.
This mini-guide provides a structural approach to troubleshoot and fix the issue.
Prerequisites
- Confirm your hardware specifications (CPU, GPU, Motherboard).
- Ensure you have a bootable recovery USB and backup your EFI.
Fix Steps
- Check if your GPU requires WhateverGreen or specific boot-args (e.g., agdpmod=pikera).
- Ensure Metal acceleration is fully supported for your macOS version.
- Update Lilu and WhateverGreen to the latest versions.
Verification
- Reboot and verify if the functionality is restored and stable under typical usage.
Original Question:
Hi.
I had a happy high sierra install for the last few years. I finally need to upgrade it so just purchased a Sapphire RX580 to replace geforce 980ti.
The rest of machine is intel 9900K on Gigabyte z390 aorus pro, Samung Evo 970 ssd.
I have tried Clover and Opencore - neither working
(1) Clover - Booting but no screen
I eventually managed to get the high sierra to install after various attempts at upgrading clover and the kexts.
It now boots with clover 5119 but the monitors do not work...
Read more
I had a happy high sierra install for the last few years. I finally need to upgrade it so just purchased a Sapphire RX580 to replace geforce 980ti.
The rest of machine is intel 9900K on Gigabyte z390 aorus pro, Samung Evo 970 ssd.
I have tried Clover and Opencore - neither working
(1) Clover - Booting but no screen
I eventually managed to get the high sierra to install after various attempts at upgrading clover and the kexts.
It now boots with clover 5119 but the monitors do not work...
Read more
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