log de messages 

kernel: usb 1-1.3: bulk timeout on ep2in
kernel: usb 1-1.3: usbfs: USBDEVFS_BULK failed ep 0x82 len 1 ret -110
kernel: usb 1-1.3: bulk timeout on ep2in
kernel: usb 1-1.3: usbfs: USBDEVFS_BULK failed ep 0x82 len 4 ret -110
kernel: usb 1-1.3: usbfs: interface 0 claimed while 'scanimage' sets config #1