我在通过 USB 集线器闪存的定制板上遇到了奇怪的行为，我正在尝试确定根本原因。
当尝试从本机刷新时（Linux XPS-15-9560 4.19.0-041900-generic #201810221809 SMP 星期一 10 月 22 日 22:11:45 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux），失败并显示：
open("/dev/bus/usb/001/039", O_RDWR) = 5
read(5, "\22\1\0\2\0\0\0@U\t\30x\0\0\1\2\0\1\t\2 \0\1\1\0\300\20\t\4\0\0\2\377\377\377\0\7\5\201\2@\0\0\7\5\1\2@\0\0", 1024) = 50
close(4) = 0
close(3) = 0
ioctl(5, USBDEVFS_CLAIMINTERFACE, 0x9f346b0) = 0
ioctl(5, USBDEVFS_BULK, 0xffbc1d30) = -1 ETIMEDOUT (Connection timed out)
以及对应的usbmon：
ffff90732cdbbcc0 2090024900 S Ci:1:014:0 s a3 00 0000 0001 0004 4 <
ffff90732cdbbcc0 2090024932 C Ci:1:014:0 0 4 = 03050000
ffff90732cdbb6c0 2116444706 S Bi:1:015:1 -115 96 <
ffff90732cdbb6c0 2116444759 C Bi:1:015:1 0 16 = 40800101 00000024 02575064 01108081
ffff90732cdbb900 2116716579 S Bo:1:015:1 -115 1472 = c0050000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ffff90732cdbb900 2121948281 C Bo:1:015:1 -2
结构是：
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 5000M
|__ Port 1: Dev 5, If 0, Class=Hub, Driver=hub/2p, 5000M # USB 3 part of 8020
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 1: Dev 14, If 0, Class=Hub, Driver=hub/2p, 480M # USB 2 part of 8020
|__ Port 1: Dev 15, If 0, Class=Vendor Specific Class, Driver=, 480M # target board
|__ Port 2: Dev 16, If 3, Class=Vendor Specific Class, Driver=ftdi_sio, 480M # FTDI
|__ Port 2: Dev 16, If 1, Class=Vendor Specific Class, Driver=ftdi_sio, 480M # FTDI
|__ Port 2: Dev 16, If 2, Class=Vendor Specific Class, Driver=ftdi_sio, 480M # FTDI
|__ Port 2: Dev 16, If 0, Class=Vendor Specific Class, Driver=ftdi_sio, 480M # FTDI
消息报告：
[ 7718.687335] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=1
[ 7718.687339] usb 1-1.1: SerialNumber: 800508593070
[ 7718.688754] hub 1-1.1:1.0: USB hub found
[ 7718.688798] hub 1-1.1:1.0: 2 ports detected
[ 7718.975225] usb 1-1.1.1: new high-speed USB device number 17 using xhci_hcd
[ 7719.075855] usb 1-1.1.1: config 1 interface 0 altsetting 0 bulk endpoint 0x81 has invalid maxpacket 64
[ 7719.075862] usb 1-1.1.1: config 1 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 64
[ 7719.076290] usb 1-1.1.1: New USB device found, idVendor=0955, idProduct=7818, bcdDevice= 0.00
[ 7719.076296] usb 1-1.1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7719.076300] usb 1-1.1.1: Product: APX
[ 7719.076304] usb 1-1.1.1: Manufacturer: NVIDIA Corp.
[ 7719.159230] usb 1-1.1.2: new high-speed USB device number 18 using xhci_hcd
[ 7719.259916] usb 1-1.1.2: New USB device found, idVendor=0403, idProduct=6011, bcdDevice= 8.00
[ 7719.259923] usb 1-1.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 7719.259927] usb 1-1.1.2: Product: Quad RS232-HS
[ 7719.259931] usb 1-1.1.2: Manufacturer: FTDI
[ 7719.266889] ftdi_sio 1-1.1.2:1.0: FTDI USB Serial Device converter detected
[ 7719.267021] usb 1-1.1.2: Detected FT4232H
[ 7719.267229] usb 1-1.1.2: FTDI USB Serial Device converter now attached to ttyUSB0
[ 7719.267580] ftdi_sio 1-1.1.2:1.1: FTDI USB Serial Device converter detected
[ 7719.267653] usb 1-1.1.2: Detected FT4232H
[ 7719.267944] usb 1-1.1.2: FTDI USB Serial Device converter now attached to ttyUSB1
[ 7719.268278] ftdi_sio 1-1.1.2:1.2: FTDI USB Serial Device converter detected
[ 7719.268355] usb 1-1.1.2: Detected FT4232H
[ 7719.268681] usb 1-1.1.2: FTDI USB Serial Device converter now attached to ttyUSB2
[ 7719.269021] ftdi_sio 1-1.1.2:1.3: FTDI USB Serial Device converter detected
[ 7719.269100] usb 1-1.1.2: Detected FT4232H
[ 7719.269333] usb 1-1.1.2: FTDI USB Serial Device converter now attached to ttyUSB3
指向错误的硬件配置。
但是，当在 Win7 上的 VirtualBox ubuntu 16.04 上运行相同的操作时，相同的操作成功完成。 （在所有 USB 驱动程序上：ohci、ehci、xhci）
Dmesg 仍然抱怨相同的 maxpacket 设置是错误的，并且根据当前驱动程序（即 ehci、ohci、xhci）而具有不同的值。
我对可能的根本原因感到困惑，因为相同的配置在 VM 中工作，恕我直言，排除了任何硬件配置或驱动程序问题。
我需要将此情况报告给 USB 驱动程序维护人员吗？
对于进一步调试有什么建议吗？