How to Troubleshoot Need help on [LOG:EXITBS:START] error(?) on macOS

All Activity Apps Boot Graphics guide hackintosh OpenCore Performance
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How to Troubleshoot Need help on [LOG:EXITBS:START] error(?) on macOS

Graphics and media-app issues are normally caused by missing Metal acceleration, an unsupported GPU path, or a fragile patch combination. macOS needs a supported graphics stack; WhateverGreen, NootRX or NootedRed can help only when the underlying GPU path is viable.

Quick Checks

  • Backup current state: Save a copy of your working EFI and run a full system backup before changing settings.
  • Identify hardware components: Note down your exact CPU, GPU, Wi-Fi card, and motherboard/laptop model.
  • Ensure utility alignment: Keep OpenCore, OCLP, and ProperTree updated.

Fix Steps

  1. Create a rollback point: Make a Time Machine backup and keep a copy of your last working EFI folder before editing OpenCore, kexts or root patches.
  2. Verify GPU support first: Confirm the exact GPU model and whether that macOS version supports Metal acceleration for it.
  3. Update graphics kexts: Refresh WhateverGreen, Lilu and any AMD-specific kexts together, not one at a time.
  4. Check boot arguments: Remove old experimental GPU boot args, then add back only the ones required for your hardware.
  5. Test acceleration: Open About This Mac, System Information and a Metal app before testing browsers, GarageBand or Pro Tools.
  6. Reduce app variables: Disable browser hardware acceleration or test another app build if only Chromium, Electron or CEF apps fail.

Verify It Worked

  • The GPU reports Metal support in System Information.
  • Window animations are smooth and not CPU-bound.
  • The affected app opens after a clean reboot.
  • No repeated GPU restart messages appear in Console.

Rollback

  • Boot with a known-good EFI snapshot.
  • Temporarily remove experimental graphics patches.
  • Return to the last macOS version where acceleration was stable.

Related iATKOS Searches

Original Question: "Need help on [LOG:EXITBS:START] error(?)"

Upload your EFI folder as a ZIP file so someone can review it and identify any possible configuration errors, aside from the already unsupported graphics card. The error "[LOG:EXITBS:START]" can have various causes. Usually, it is due to minor configuration issues that need to be resolved. Below is a list of possible causes that you should check: Config.plist: ACPI Patches: Install the appropriate patches for your hardware. SMBIOS: Use an SMBIOS that matches your hardware. Quirks: Verify the settings and adjust them if necessary. Installed Kexts: Ensure that the kexts used are compatible with your hardware and macOS version. Update the kexts using OCAT (OpenCore Auxiliary Tools). Debugging:: Enable Debug Mode Activate the debug mode in OpenCore. Set the "Target" value in the Config.plist to 67 or 103 to generate a log file in the EFI partition. If other errors occur, upload the boot log here for further analysis. Review the Boot Log Analyze the log file to identify the root cause of the error. Update OpenCore: Update OpenCore and Kexts Make sure you are using the latest version of OpenCore and all relevant kexts. Updates often resolve known issues and improve compatibility. Use OCAT for this purpose. Intel Iris Xe Graphics Support: The Intel Iris Xe Graphics integrated into the Intel Core i5-1135G7 CPU is not natively supported by macOS. If you have managed to boot the system successfully, refer to the guide shared by a user who patched the graphics card for full acceleration. Here’s a helpful thread that might guide you: https://www.insanelymac.com/forum/topic/358305-80-solved-iris-xe-igpu-on-tiger-lake-successfully-loaded-icllp-frambuffer-and-vram-also-recognizes-1536mb-however-some-issues/ Best luck!
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