What on earth is this message about?

usb usb2-port8: Cannot enable. Maybe the USB cable is bad?

earlier in dmesg it says:

usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.05
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb2: Product: xHCI Host Controller
usb usb2: Manufacturer: Linux 5.5.15-200.fc31.x86_64 xhci-hcd
usb usb2: SerialNumber: 0000:00:14.0

On the internet I can lookup the vendor and product and it says:

USB     1D6B    Linux Foundation        0003    3.0 root hub

Which makes it sound as if usb2 is some kind of virtual hardware
in the kernel, so how do I check this virtual cable that may be
bad?

DMESG shows this cable bad message once every 5 seconds, which
is a bit annoying.
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