Hello, This is info about Our serial to USB adapter Vivanco 23425: it only enabled once-off file transfer. [ 55.212492] usb 3-1: new full-speed USB device number 2 using ohci-pci [ 55.379676] usb 3-1: New USB device found, idVendor=067b, idProduct=2303 [ 55.379682] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 55.379685] usb 3-1: Product: USB-Serial Controller [ 55.379687] usb 3-1: Manufacturer: Prolific Technology Inc. [ 55.381740] usbserial_generic 3-1:1.0: The "generic" usb-serial driver is only for testing and one-off prototypes. [ 55.381745] usbserial_generic 3-1:1.0: Tell linux-usb@xxxxxxxxxxxxxxx to add your device to a proper driver. [ 55.381747] usbserial_generic 3-1:1.0: generic converter detected [ 55.381863] usb 3-1: generic converter now attached to ttyUSB0 [ 55.438813] usbcore: registered new interface driver pl2303 [ 55.438829] usbserial: USB Serial support registered for pl2303 [ 290.315388] systemd-hostnamed[2481]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname! -- 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