我将红外线接收器连接到USB端口...(dmesg的最后一行告诉设备文件) $ dmesg [10496.596063] usb 7-2: new full-speed USB device number 2 using uhci_hcd [10496.751112] usb 7-2: New USB device found, idVendor=0df7, idProduct=0620 [10496.751117] usb 7-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [10496.751120] usb 7-2: Product: USB-Serial Controller [10496.751124] usb 7-2: Manufacturer: Prolific Technology Inc. [10496.787441] usbcore: registered new …