Oracle Linux: Error Message "usb: failed to peer usb#-port# and usb#-port# by location (usb#-port#:none) (usb#-port#:usb#-port#)"

(Doc ID 2360326.1)

Last updated on MARCH 01, 2018

Applies to:

Linux OS - Version Oracle Linux 6.7 with Unbreakable Enterprise Kernel [4.1.12] and later
Linux x86-64

Symptoms

Syslog shows error messages regarding USB ports as "usb: failed to peer ...".

Feb 5 11:53:46 hostname kernel: [ 26.889397] hub 2-0:1.0: USB hub found
Feb 5 11:53:46 hostname kernel: [ 26.898944] hub 2-0:1.0: 10 ports detected
Feb 5 11:53:46 hostname kernel: [ 26.910063] usb: failed to peer usb2-port4 and usb1-port2 by location (usb2-port4:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 26.926778] usb usb2-port4: failed to peer to usb1-port2 (-16)
Feb 5 11:53:46 hostname kernel: [ 26.938940] usb: port power management may be unreliable
Feb 5 11:53:46 hostname kernel: [ 26.950798] usb: failed to peer usb2-port5 and usb1-port2 by location (usb2-port5:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 26.967864] usb usb2-port5: failed to peer to usb1-port2 (-16)
Feb 5 11:53:46 hostname kernel: [ 26.980510] usb: failed to peer usb2-port6 and usb1-port2 by location (usb2-port6:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 26.997707] usb usb2-port6: failed to peer to usb1-port2 (-16)
Feb 5 11:53:46 hostname kernel: [ 27.010601] usb: failed to peer usb2-port7 and usb1-port2 by location (usb2-port7:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 27.027877] usb usb2-port7: failed to peer to usb1-port2 (-16)
Feb 5 11:53:46 hostname kernel: [ 27.040788] usb: failed to peer usb2-port8 and usb1-port2 by location (usb2-port8:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 27.058232] usb usb2-port8: failed to peer to usb1-port2 (-16)
Feb 5 11:53:46 hostname kernel: [ 27.072149] usb: failed to peer usb2-port9 and usb1-port2 by location (usb2-port9:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 27.089873] usb usb2-port9: failed to peer to usb1-port2 (-16)
Feb 5 11:53:46 hostname kernel: [ 27.104902] usb: failed to peer usb2-port10 and usb1-port2 by location (usb2-port10:none) (usb1-port2:usb2-port2)
Feb 5 11:53:46 hostname kernel: [ 27.123033] usb usb2-port10: failed to peer to usb1-port2 (-16)

Changes

 OS booting or connecting USB hubs/devices.

Cause

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