Created attachment 843325 [details]
lsusb -vv

With the 5.10.0rc2 kernel from Kernel:HEAD, I'm experiencing a flood of:

...
[  372.567942] usb usb2-port1: Cannot enable. Maybe the USB cable is bad?
[  374.686509] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
[  377.026495] usb usb2-port1: Cannot enable. Maybe the USB cable is bad?
[  378.986503] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
[  381.446415] usb usb2-port1: Cannot enable. Maybe the USB cable is bad?
[  383.290504] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
[  385.918496] usb usb2-port1: Cannot enable. Maybe the USB cable is bad?
[  387.586478] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
[  390.386475] usb usb2-port1: Cannot enable. Maybe the USB cable is bad?
[  391.894454] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
...

The XPS 13 is connected to a Belkin Thunberbird dock. As far as I can tell,
except for these messages, all USB connected peripherals (keyboard, mouse,
webcam) are working.

Attaching lsusb -vv and dmesg output.