How to Fix Asus Z370-I with onboard ASM3142 controller

By Catalina
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How to Fix Asus Z370-I with onboard ASM3142 controller

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. Boot with -v keepsyms=1 debug=0x100 to identify the exact kernel panic.
  2. Validate your config.plist using ocvalidate.
  3. Ensure your EFI matches the Dortania guide specifications for your CPU generation.

Verification

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

Original Question:

Hello,
Has anyone got this controller to work with JBOD enclosure on Catalina? I have correct USB mapping and have no problems with USB sticks plugged in to gen2 port. However, when I plug in gen2 4xHDD enclosure it only detects single drive. When I plug it in to another port (usb3.1gen1) it detects all drives just fine. It seems like there is no multiport support for JBOD, but when I go to System Report>USB it shows 4 USB3.1 Bridges with speed of 10Gb each, which indicates the multiport is...

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Author: chopperpl

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