Raspberry pi 不启用/检测端口，我有 2 个 pi，这是来自一个不起作用的 dmesg：
[ 1.420066] usbcore: registered new interface driver r8152
[ 1.420127] usbcore: registered new interface driver lan78xx
[ 1.420185] usbcore: registered new interface driver smsc95xx
这是一个有效的方法：
[ 1.404643] usbcore: registered new interface driver r8152
[ 1.404712] usbcore: registered new interface driver lan78xx
[ 1.404787] usbcore: registered new interface driver smsc95xx
[ 1.406422] xhci_hcd 0000:01:00.0: enabling device (0140 -> 0142)
[ 1.406585] xhci_hcd 0000:01:00.0: xHCI Host Controller
[ 1.406621] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 1
[ 1.409978] xhci_hcd 0000:01:00.0: hcc params 0x002841eb hci version 0x100 quirks 0x0000030000000890
[ 1.411326] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[ 1.411346] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.411363] usb usb1: Product: xHCI Host Controller
[ 1.411379] usb usb1: Manufacturer: Linux 5.10.17-v7l+ xhci-hcd
[ 1.411395] usb usb1: SerialNumber: 0000:01:00.0
[ 1.412119] hub 1-0:1.0: USB hub found
[ 1.412217] hub 1-0:1.0: 1 port detected
[ 1.412909] xhci_hcd 0000:01:00.0: xHCI Host Controller
[ 1.412937] xhci_hcd 0000:01:00.0: new USB bus registered, assigned bus number 2
[ 1.412964] xhci_hcd 0000:01:00.0: Host supports USB 3.0 SuperSpeed
[ 1.413502] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.10
[ 1.413521] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.413538] usb usb2: Product: xHCI Host Controller
[ 1.413554] usb usb2: Manufacturer: Linux 5.10.17-v7l+ xhci-hcd
[ 1.413571] usb usb2: SerialNumber: 0000:01:00.0
[ 1.414300] hub 2-0:1.0: USB hub found
[ 1.414377] hub 2-0:1.0: 4 ports detected
知道为什么它会停止吗？我尝试安装不同版本的 raspbian，但仍然无法正常工作。