dimenticavo...
con tail -f var/log/messsges

Aug 10 10:47:33 netcomsrl kernel: usb_control/bulk_msg: timeout
Aug 10 10:47:33 netcomsrl kernel: usb.c: USB device not accepting new address=109 (error=-110)
Aug 10 10:47:33 netcomsrl kernel: hub.c: new USB device 00:10.3-5, assigned address 110
Aug 10 10:47:38 netcomsrl kernel: usb_control/bulk_msg: timeout
Aug 10 10:47:38 netcomsrl kernel: usb.c: USB device not accepting new address=110 (error=-110)
Aug 10 10:47:38 netcomsrl kernel: hub.c: new USB device 00:10.3-5, assigned address 111
Aug 10 10:47:43 netcomsrl kernel: usb_control/bulk_msg: timeout
Aug 10 10:47:43 netcomsrl kernel: usb.c: USB device not accepting new address=111 (error=-110)
Aug 10 10:47:43 netcomsrl kernel: hub.c: new USB device 00:10.3-5, assigned address 112
Aug 10 10:47:48 netcomsrl kernel: usb_control/bulk_msg: timeout
Aug 10 10:47:48 netcomsrl kernel: usb.c: USB device not accepting new address=112 (error=-110)
Aug 10 10:47:49 netcomsrl kernel: hub.c: new USB device 00:10.3-5, assigned address 113



e continua ad aumentare il "assigned address 113"
assigned address 114

ecc ecc