Why is the error "kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6" written to the /var/log/messages file?

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux (RHEL)
    • 6
    • 5

Issue

  • What does the following error message, under /var/log/messages file, mean?

    Aug 22 00:52:01 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
    Aug 22 01:10:08 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
    Aug 22 04:04:34 localhost init: Trying to re-exec init
    Aug 22 06:21:16 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
    Aug 22 12:47:14 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
    Aug 22 16:34:29 localhost last message repeated 2 times
    Aug 22 17:21:17 localhost kernel: usb 1-2.2: reset high speed USB device using ehci_hcd and address 6
    Aug 22 17:41:32 localhost kernel: Warning: /proc/ide/hd?/settings interface is obsolete, and will be removed soon!
    

Resolution

  1. Replace hardware: In most cases, you need to replace the motherboard.
  2. Remove ehci_hcd driver temporarily.
  3. Disable ehci_hcd drive USB 2.0 interface, and use it as USB 1.1.

Root Cause

The Enhanced Host Controller Interface (EHCI) is a register-level interface that enables a host controller for USB or FireWire hardware to communicate with a host controller driver in software.
This error indicates that USB 2.0 may not function on your system, or may function only at USB 1.1 speeds.

Diagnostic Steps

  • To collect more information about the EHCI controller, the following commands can be used:

    # lspci |grep -i ehci
    # lsusb -v | less
    

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