USB Hub壊れた?

[67773.833839] usb usb1-port2: attempt power cycle
[67774.485776] usb 1-2: new full-speed USB device number 20 using xhci_hcd
[67774.486026] usb 1-2: Device not responding to setup address.
[67774.693941] usb 1-2: Device not responding to setup address.
[67774.901736] usb 1-2: device not accepting address 20, error -71
[67775.029742] usb 1-2: new full-speed USB device number 21 using xhci_hcd
[67775.029960] usb 1-2: Device not responding to setup address.
[67775.238028] usb 1-2: Device not responding to setup address.
[67775.449757] usb 1-2: device not accepting address 21, error -71
[67775.449844] usb usb1-port2: unable to enumerate USB device