yoques@Aspire-5734Z:~$ dmesg | tail -4
[ 2785.660057] usb 3-1: device not accepting address 20, error -71
[ 2785.772052] usb 3-1: new full speed USB device number 21 using uhci_hcd
[ 2786.180087] usb 3-1: device not accepting address 21, error -71
[ 2786.180112] hub 3-0:1.0: unable to enumerate USB device on port 1