Alan Stern wrote: > the device's embedded hub ACKs the packets from the PC and not the > packets from the RPi. > > What other differences could there be? Timing? Power levels? Yes, both good candidates. Can you measure VUSB? As for timing, the host controller will send SOF more or less regularly, if too irregular then that could cause problems for the device. Does your analyzer provide precise timestamps? //Peter -- 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
