关于Sabrent HB-BU10自供电USB Hub在Ubuntu 22.10中被误判为总线供电的问题咨询

大家好，我最近在戴尔7490笔记本上用Ubuntu 22.10系统搭配Sabrent HB-BU10自供电USB Hub，遇到了个挺奇怪的问题：明明这个Hub是带60W外部电源的自供电设备，lsusb也正确识别它为Self Powered，但系统却总是把它当成总线供电的Hub，导致插外接设备时提示供电不足。下面是详细的情况：

基础环境 #

• 设备：Sabrent HB-BU10 自供电USB Hub（外接60W电源）
• 系统：Ubuntu 22.10，运行在戴尔7490笔记本

无Hub时的系统USB状态 #

没插Hub的时候，用lsusb -v查看内部Hub，输出如下：

Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

仅插Hub（无外接设备）时的识别情况 #

只把Hub插到电脑上（没接任何其他设备），lsusb -v会识别出两个新的Hub（分别对应USB2和USB3通道），关键输出里明确标注了Self Powered，而且MaxPower是0mA，完全符合自供电设备的特征：

Bus 002 Device 029: ID 0bda:0411 Realtek Semiconductor Corp. Hub  (2)
iProduct                2 USB3.2 Hub
bmAttributes         0xe0
Self Powered
MaxPower                0mA

Bus 001 Device 030: ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub  (1017)
iProduct                2 USB2.1 Hub
MaxPower                0mA
bmAttributes         0xe0
Self Powered
Remote Wakeup

系统日志的报错信息 #

但插Hub后，查看sudo dmesg的日志，却出现了把Hub当成总线供电设备的错误提示：

[51415.379442] usb 1-2: new high-speed USB device number 33 using xhci_hcd
[51415.543357] usb 1-2: New USB device found, idVendor=0bda, idProduct=5411, bcdDevice= 0.02
[51415.543370] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[51415.543377] usb 1-2: Product: USB2.1 Hub
[51415.543381] usb 1-2: Manufacturer: Generic
[51415.547300] hub 1-2:1.0: USB hub found
[51415.548519] hub 1-2:1.0: 4 ports detected
[51415.663869] usb 2-3: new SuperSpeed USB device number 32 using xhci_hcd
[51415.699153] usb 2-3: New USB device found, idVendor=0bda, idProduct=0411, bcdDevice= 0.02
[51415.699157] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[51415.699159] usb 2-3: Product: USB3.2 Hub
[51415.699160] usb 2-3: Manufacturer: Generic
[51415.706866] hub 2-3:1.0: USB hub found
[51415.708501] hub 2-3:1.0: 4 ports detected
[51415.847274] usb 1-2.4: new high-speed USB device number 34 using xhci_hcd
[51415.959902] usb 1-2.4: can't connect bus-powered hub to this port
[51416.045174] usb 2-3.4: new SuperSpeed USB device number 33 using xhci_hcd
[51416.071928] usb 2-3.4: can't connect bus-powered hub to this port

如果再往Hub上插任何设备，还会额外出现供电不足的报错：

usb 2-3.2: rejected 1 configuration due to insufficient available bus power

我实在搞不懂，明明lsusb已经正确识别这个Hub是自供电的，为什么系统还是会把它当成总线供电设备，进而出现这些供电相关的错误呢？有没有朋友遇到过类似的问题，或者知道怎么排查解决的？

备注：内容来源于stack exchange，提问作者tim11g