What does the message "usb 2-6: Disable of device-initiated U1 failed." mean?

Solution Verified - Updated -

Issue

  • The following message is displayed when USB disconnected:
usb 2-6: Disable of device-initiated U1 failed.
usb 2-6: Disable of device-initiated U2 failed.

Environment

  • Red Hat Enterprise Linux 7
  • kernel version before 3.10.0-1062.el7

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