USB 端口在 Raspian 上可用，但在 Ubuntu 19.10 上不可用
ubuntu@ubuntu:~$ lsusb --tree
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
ubuntu@ubuntu:~$ dmesg | grep usb
[ 0.094588] usbcore: registered new interface driver usbfs
[ 0.094642] usbcore: registered new interface driver hub
[ 0.094751] usbcore: registered new device driver usb
[ 1.409004] usbcore: registered new interface driver lan78xx
[ 1.410720] usbcore: registered new interface driver smsc95xx
[ 1.429087] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.03
[ 1.430796] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.432515] usb usb1: Product: xHCI Host Controller
[ 1.434198] usb usb1: Manufacturer: Linux 5.3.0-1007-raspi2 xhci-hcd
[ 1.435883] usb usb1: SerialNumber: 0000:01:00.0
[ 1.447247] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.03
[ 1.448939] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.450605] usb usb2: Product: xHCI Host Controller
[ 1.452281] usb usb2: Manufacturer: Linux 5.3.0-1007-raspi2 xhci-hcd
[ 1.453947] usb usb2: SerialNumber: 0000:01:00.0
[ 1.462256] dwc_otg fe980000.usb: base=(____ptrval____)
[ 1.776269] usb 1-1: new high-speed USB device number 2 using xhci_hcd
[ 1.894400] dwc_otg fe980000.usb: DWC OTG Controller
[ 1.896088] dwc_otg fe980000.usb: new USB bus registered, assigned bus number 3
[ 1.897805] dwc_otg fe980000.usb: irq 24, io mem 0x00000000
[ 1.902965] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.03
[ 1.904529] usb 1-1: device descriptor read/64, error 18
[ 1.904629] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.907896] usb usb3: Product: DWC OTG Controller
[ 1.909555] usb usb3: Manufacturer: Linux 5.3.0-1007-raspi2 dwc_otg_hcd
[ 1.911211] usb usb3: SerialNumber: fe980000.usb
[ 2.140497] usb 1-1: device descriptor read/64, error 18
[ 2.404243] usb 1-1: new high-speed USB device number 3 using xhci_hcd
[ 2.540463] usb 1-1: device descriptor read/64, error 18
[ 2.784461] usb 1-1: device descriptor read/64, error 18
[ 2.900328] usb usb1-port1: attempt power cycle
[ 3.564237] usb 1-1: new high-speed USB device number 4 using xhci_hcd
[ 3.700465] usb 1-1: device descriptor read/64, error 18
[ 3.944457] usb 1-1: device descriptor read/64, error 18
[ 4.208271] usb 1-1: new high-speed USB device number 5 using xhci_hcd
[ 4.352501] usb 1-1: device descriptor read/64, error 18
[ 4.573717] usb_phy_generic phy: phy supply vcc not found, using dummy regulator
[ 4.592556] usb 1-1: device descriptor read/64, error 18
[ 4.704446] usb usb1-port1: unable to enumerate USB device
[ 15.842218] usbcore: registered new interface driver brcmfmac
有什么解决办法吗？