@大法师 对，更新了之后也没变化，无法运行指运行相机相关程序时会报USB uvc相关的错误。

@大法师 按照您的流程试过了，没有任何变化。建议您还是得拿相机试一试。另外我又发现，Pi4B的USB3.0的口，底部那个才有我们讨论的情况，上面那个口上电能识别到USB3.0，但是实际无法运行。

@大法师 好的多谢，那么请问那个到了内核之后再加载驱动，可不可以理解为我再写个脚本开机之后手动insmod来加载USB驱动呢？如果是的话我应该去哪里找到这个USB驱动呢？

@AugustRobot_Zou 牛的，种草了

@jack_admin log3.txt
文件是完整的日志，下面是筛选了USB的结果：

[   11.379437] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[   11.403501] ehci-platform fc800000.usb: new USB bus registered, assigned bus number 1
[   11.430272] ehci-platform fc800000.usb: USB 2.0 started, EHCI 1.00
[   11.436506] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[   11.444760] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   11.467170] hub 1-0:1.0: USB hub found
[   11.482827] ehci-platform fc880000.usb: new USB bus registered, assigned bus number 2
[   11.506939] ehci-platform fc880000.usb: USB 2.0 started, EHCI 1.00
[   11.513160] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[   11.521412] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   11.543800] hub 2-0:1.0: USB hub found
[   11.551730] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[   11.569969] ohci-platform fc840000.usb: new USB bus registered, assigned bus number 3
[   11.644335] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.10
[   11.652586] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   11.676003] hub 3-0:1.0: USB hub found
[   11.690592] ohci-platform fc8c0000.usb: new USB bus registered, assigned bus number 4
[   11.723632] usb 1-1: new high-speed USB device number 2 using ehci-platform
[   11.764331] usb usb4: New USB device found, idVendor=1d6b, idProduct=0001, bcdDevice= 5.10
[   11.772583] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   11.772716] hub 4-0:1.0: USB hub found
[   11.803618] usb 2-1: new high-speed USB device number 2 using ehci-platform
[   11.820409] xhci-hcd xhci-hcd.6.auto: new USB bus registered, assigned bus number 5
[   11.843631] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[   11.851882] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   11.874533] hub 5-0:1.0: USB hub found
[   11.877863] usb 1-1: New USB device found, idVendor=1a86, idProduct=8091, bcdDevice= 1.21
[   11.886455] usb 1-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[   11.897497] usb 1-1: Product: USB HUB
[   11.903013] xhci-hcd xhci-hcd.6.auto: new USB bus registered, assigned bus number 6
[   11.907107] hub 1-1:1.0: USB hub found
[   11.914285] xhci-hcd xhci-hcd.6.auto: Host supports USB 3.0 SuperSpeed
[   11.924583] usb usb6: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.10
[   11.944891] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   11.961436] usb 2-1: New USB device found, idVendor=8086, idProduct=0b07, bcdDevice=50.c7
[   11.970720] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[   11.975719] hub 6-0:1.0: USB hub found
[   12.009380] xhci-hcd xhci-hcd.7.auto: new USB bus registered, assigned bus number 7
[   12.032576] usb usb7: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.10
[   12.040830] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   12.063477] hub 7-0:1.0: USB hub found
[   12.076758] xhci-hcd xhci-hcd.7.auto: new USB bus registered, assigned bus number 8
[   12.084406] xhci-hcd xhci-hcd.7.auto: Host supports USB 3.0 SuperSpeed
[   12.099051] usb usb8: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.10
[   12.107302] usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[   12.129960] hub 8-0:1.0: USB hub found
[   12.143424] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[   12.169461] usbserial: USB Serial support registered for generic
[   12.181042] usbserial: USB Serial support registered for cp210x
[   12.192732] usbserial: USB Serial support registered for FTDI USB Serial Device
[   12.205799] usbserial: USB Serial support registered for Keyspan - (without firmware)
[   12.213604] usb 1-1.3: new full-speed USB device number 3 using ehci-platform
[   12.213624] usbserial: USB Serial support registered for Keyspan 1 port adapter
[   12.228042] usbserial: USB Serial support registered for Keyspan 2 port adapter
[   12.235344] usbserial: USB Serial support registered for Keyspan 4 port adapter
[   12.248231] usbserial: USB Serial support registered for GSM modem (1-port)
[   12.261007] usbserial: USB Serial support registered for oti6858
[   12.272588] usbserial: USB Serial support registered for pl2303
[   12.284263] usbserial: USB Serial support registered for Qualcomm USB modem
[   12.296812] usbserial: USB Serial support registered for Sierra USB modem
[   12.319101] usb 1-1.3: New USB device found, idVendor=3163, idProduct=004c, bcdDevice= 1.01
[   12.330462] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[   12.346581] cdc_acm 1-1.3:1.0: ttyACM0: USB ACM device
[   12.426936] usb 1-1.4: new low-speed USB device number 4 using ehci-platform
[   12.538103] usb 1-1.4: New USB device found, idVendor=04f3, idProduct=0103, bcdDevice= 1.07
[   12.546444] usb 1-1.4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   13.251195] USB Video Class driver (1.1.1)
[   13.531827] hid-generic 0003:04F3:0103.0001: input,hidraw0: USB HID v1.11 Keyboard [HID 04f3:0103] on usb-fc800000.usb-1.4/input0
[   13.582668] hid-generic 0003:04F3:0103.0002: input,hidraw1: USB HID v1.11 Device [HID 04f3:0103] on usb-fc800000.usb-1.4/input1
[   13.599706] usbhid: USB HID core driver
[   98.484874] usb 2-1: USB disconnect, device number 2
[  100.923579] usb 8-1: new SuperSpeed Gen 1 USB device number 2 using xhci-hcd
[  100.941718] usb 8-1: New USB device found, idVendor=8086, idProduct=0b07, bcdDevice=50.c7
[  100.941738] usb 8-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3

我在最后重新插拔了一下，在日志最后有体现。

@AugustRobot_Zou 效果怎么样？我们给无人机用怕距离太短了。

@george 关闭uboot下USB设备的注册需要改UBOOT代码吗？还是直接上电的时候进uboot改一下就好了？

@george 好的我试试

@jack_admin 稍等我明天看看

补充，同样的系统、设备和线在香橙派5上试验过，没有出现过类似问题。