How to Fix Updating High Sierra to Catalina
Graphics issues usually stem from an unsupported GPU, missing acceleration patches, or incorrect boot arguments.
Quick Fix Steps
- Verify GPU support: Check if your GPU is natively supported via WhateverGreen docs.
- Update kexts: Ensure Lilu and WhateverGreen are current.
- Check boot arguments: Add
-v keepsyms=1 debug=0x100for debugging, oragdpmod=pikerafor AMD. - Test Metal: About This Mac > System Report > Graphics.
Verification
- Graphics acceleration is smooth.
- Metal is reported in System Information.
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Original Question: "Updating High Sierra to Catalina"
I currently run High sierra on my skylake i3 cpu and a geforce 750Ti. But Ive come to the point that I dont need my graphics anymore and Would like to update to catalina for latest software.I have a few questions in my minds now 1. Can I simply update from the app store to mojave and then to catalina ? Or a fresh install is better ? 2. Are there any overheads which I need to do with opencore before ? 3. Should I change my VGA output from gfx card to Motherboard output or just keep it like that ?
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