Hi Greg, Sorry for the long delay before this message. Real life intruded on my computing time. On 05/01/17 12:51, Greg KH wrote: > Are you sure the device even works properly? It could be the device has > problems returning data correctly. Can you run usbmon to see if the > data is being sent/received correctly? Tests done with three different keys, with the same results. Since the keys come from the same manufacturer, we ordered a (small) batch of UF2 keys from 4 different manufacturers. Should receive them around next week, and we will test if those new keys behave properly or not. -- Pierre-Yves Bonnetain-Nesterenko -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html