我有一个带有 CH340 串行芯片的 arduino nano 克隆。它出现在 lsusb 中QinHeng Electronics HL-340 USB-Serial adapter，当它连接时，我可以在 dmesg 中看到它，并显示以下日志记录：
[ 31.251098] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3)
[ 31.251544] vhci_hcd vhci_hcd.0: devid(65541) speed(2) speed_str(full-speed)
[ 31.252004] vhci_hcd vhci_hcd.0: Device attached
[ 31.538489] vhci_hcd: vhci_device speed not set
[ 31.608492] usb 1-1: new full-speed USB device number 2 using vhci_hcd
[ 31.698522] vhci_hcd: vhci_device speed not set
[ 31.768510] usb 1-1: SetAddress Request (2) to port 0
[ 31.812328] usb 1-1: New USB device found, …