Please report all spam threads, posts and suspicious members. We receive spam notifications and will take immediate action!
Results 1 to 2 of 2

Thread: Z77 Extreme6 not recognizing USB keyboard until after booting OS kernel




  1. #1
    liujed is offline Junior Member
    Join Date
    Aug 2012
    Location
    North America
    Posts
    2

    Default Z77 Extreme6 not recognizing USB keyboard until after booting OS kernel

    I have a Kinesis Advantage MPC/USB keyboard plugged into my Z77 Extreme6. When I power on my computer, I am unable to use the keyboard until the kernel does its hardware detection. This happens regardless of what I have set for the "Legacy USB Support" setting in BIOS, and regardless of which USB port the keyboard is plugged into.
    • I have a USB mouse that works fine when "Legacy USB Support" is set to anything except "Disabled".
    • The keyboard has a built-in unpowered USB hub. The System Browser in BIOS shows this hub in the port where I have the keyboard plugged in, and this is updated correctly as I move the keyboard from one USB port to another. However, my USB mouse is similarly unusable when plugged into the keyboard's USB hub.
    • During POST, while my USB keyboard is plugged in, I see Dr. Debug report status D7 (No Console Input Devices are found). If I unplug and replug the keyboard, I see status B4 (USB hot plug), but I'm still not able to use the keyboard.
    • My BIOS version is 1.90.
    • Keyboard worked fine with legacy USB support in my previous motherboard (Gigabyte GA-P55A-UD3)
    Last edited by liujed; 08-27-2012 at 11:41 PM.

  2. #2
    liujed is offline Junior Member
    Join Date
    Aug 2012
    Location
    North America
    Posts
    2

    Default Re: Z77 Extreme6 not recognizing USB keyboard until after booting OS kernel

    I forgot to mention -- the keyboard worked fine with the legacy USB support in my previous motherboard (Gigabyte GA-P55A-UD3). Edited OP to add this.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •