7 Replies Latest reply on Apr 1, 2015 4:27 PM by kevin_intel

    Windbg and Usb 3.0 Debug Capability (Dbc) on Broadwell chipsets




      I'm trying to get the Windows Kernel Debugger (Windbg) to connect to my Lenovo Yoga 3 laptop

      using a USB 3.0 debugging cable (Type A to Type A).  The Yoga 3 has a Broadwell processor

      and chipset.  The chipset claims to have Dbc support when viewed with the Microsoft

      Usbview utility.


      However, when I enable kernel debugging in the Yoga 3, I get an Enumeration Error.

      No matter how many times I reconnect the cable, I continue to get an Enumeration Error on my

      host system.


      I've also tried to connect to a Haswell-EP motherboard (with Dbc support) and I get the same

      problem.  Is there something that I am missing here?


      I have been successful in connecting WindDbg to a Renesas uPD720202 USB 3.0 controller

      and a Via Labs VL806 USB 3.0 controller.   So, I am pretty confident that my Host and my

      USB 3.0 debugging cable are good.  I just can't get the Intel chipsets to work.


      Any suggestions would be appreciated.