UCMUCSI_LIVEDUMP

What is 0x000001D4?

This medium-severity issue affects the system driver. The USB Connector Manager UCSI driver detected a hardware or connection timeout in the USB-C Type-C controller firmware. Commonly caused by faulty USB-C hubs, outdated motherboard BIOS, or degraded USB-C ports. It sometimes comes down to conflicting external Thunderbolt/USB-C dock. Work through the steps below in order.

Common Causes

• USB-C Type-C port controller timeout
• Outdated motherboard BIOS firmware
• Conflicting external Thunderbolt/USB-C dock
• Degraded physical USB-C port connection

Step-by-Step Fix Guide

• 1
  Perform a power cycle (discharge motherboard capacitors)

  As a first move, Perform a power cycle handles the most common scenario behind 0x000001D4.

• 2
  Update the motherboard BIOS and chipset firmware

  For cases that don't clear up right away, the remaining steps target less typical usb controllers instability problems.

• 3
  Reinstall USB Controller drivers in Device Manager

  This step, "Reinstall USB Controller drivers in Device Manager", specifically rules out USB-C Type-C port controller timeout.

• 4
  Unplug and reseat external hubs/displays

  "Unplug and reseat external hubs/displays" targets conflicting external Thunderbolt/USB-C dock, one of the documented causes of 0x000001D4.

Commands & Diagnostics

Frequently Asked Questions