How to Fix IOConsoleUsers: gIOScreenLockState... after upgrading from a working Catalina installation to Big Sur with OpenCore

How to Fix IOConsoleUsers: gIOScreenLockState... after upgrading from a working Catalina installation to Big Sur with OpenCore

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

1. Check if your GPU requires WhateverGreen or specific boot-args (e.g., agdpmod=pikera).
2. Ensure Metal acceleration is fully supported for your macOS version.
3. Update Lilu and WhateverGreen to the latest versions.

Verification

• Reboot and verify if the functionality is restored and stable under typical usage.

Original Question:

I've already read Dortania's guide. Having tried setting "-igfxmlr npci=0x2000" in boot argument, setting up framebuffer-patch (unnecessary as I've already modified DVMT pre-allocated), and re-enabling CSM. I even tried wiping out the full disk and do a clean install but none of these works :( Screenshot: Processing img xjr133syv0g61... CPU: i7-6700 GPU: HD 530 SMBIOS model: iMac 17, 1 submitted by /u/march_happy [link] [comments]