[  +0.108018] usb usb3-port8: attempt power cycle
[  +0.651950] usb 3-8: new high-speed USB device number 14 using xhci_hcd
[  +0.000076] usb 3-8: Device not responding to setup address.
[  +0.207954] usb 3-8: Device not responding to setup address.
[  +0.207921] usb 3-8: device not accepting address 14, error -71
[  +0.128004] usb 3-8: new high-speed USB device number 15 using xhci_hcd
[  +0.000072] usb 3-8: Device not responding to setup address.
[  +0.207980] usb 3-8: Device not responding to setup address.
[  +0.207930] usb 3-8: device not accepting address 15, error -71
[  +0.000059] usb usb3-port8: unable to enumerate USB device
[Oct 2 17:09] usb 3-7: new high-speed USB device number 16 using xhci_hcd
[  +0.128023] usb 3-7: device descriptor read/64, error -71
[  +0.235985] usb 3-7: device descriptor read/64, error -71
[  +0.235971] usb 3-7: new high-speed USB device number 17 using xhci_hcd
[  +0.128026] usb 3-7: device descriptor read/64, error -71
[  +0.235955] usb 3-7: device descriptor read/64, error -71
[  +0.108053] usb usb3-port7: attempt power cycle
[  +0.655924] usb 3-7: new high-speed USB device number 18 using xhci_hcd
[  +0.000066] usb 3-7: Device not responding to setup address.
[  +0.208008] usb 3-7: Device not responding to setup address.
[  +0.207949] usb 3-7: device not accepting address 18, error -71
[  +0.128005] usb 3-7: new high-speed USB device number 19 using xhci_hcd
[  +0.000069] usb 3-7: Device not responding to setup address.
[  +0.207984] usb 3-7: Device not responding to setup address.
[  +0.207923] usb 3-7: device not accepting address 19, error -71
[  +0.000067] usb usb3-port7: unable to enumerate USB device