Comment 3 for bug 1983787

Agreed that loading an older kernel might give some interesting info, but it might not be until later this week that I can re-image my machine and get that to you. In the meantime, here is the dmesg info, and my observations:

At 219.322795, I disconnect from the USB2 port, plug into USB3 at 220.959698, and an interesting error appears at 224.531221:
[ 224.531221] usb 8-2.2: Not enough bandwidth for new device state.
[ 224.531226] usb 8-2.2: can't set config #1, error -28

This is just after it tries to load the mouse, but the same error appears when it detects the keybaord as well.
I did some experimenting, and it turns out if I ONLY plug the webcam into the hub, then it works fine in both port types. But if I ONLY plug in a standard plain office keyboard, then it again works only in USB2 ports. It's as if USB3 ports don't like non 'high-speed' devices plugged into the hub.

Here is the log from when I only have the plain office keybaord plugged into the hub -> USB2:
[ 921.131359] usb 1-5.2: new low-speed USB device number 19 using ehci-pci
[ 921.378603] usb 1-5.2: New USB device found, idVendor=03f0, idProduct=034a, bcdDevice= 1.21
[ 921.378610] usb 1-5.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 921.378612] usb 1-5.2: Product: HP Elite USB Keyboard
[ 921.378614] usb 1-5.2: Manufacturer: Chicony
[ 921.387895] input: Chicony HP Elite USB Keyboard as /devices/pci0000:00/0000:00:12.2/usb1/1-5/1-5.2/1-5.2:1.0/0003:03F0:034A.000E/input/input39
[ 921.447589] hid-generic 0003:03F0:034A.000E: input,hidraw0: USB HID v1.10 Keyboard [Chicony HP Elite USB Keyboard] on usb-0000:00:12.2-5.2/input0
[ 921.454660] input: Chicony HP Elite USB Keyboard System Control as /devices/pci0000:00/0000:00:12.2/usb1/1-5/1-5.2/1-5.2:1.1/0003:03F0:034A.000F/input/input40
[ 921.511524] input: Chicony HP Elite USB Keyboard Consumer Control as /devices/pci0000:00/0000:00:12.2/usb1/1-5/1-5.2/1-5.2:1.1/0003:03F0:034A.000F/input/input41
[ 921.511621] hid-generic 0003:03F0:034A.000F: input,hidraw1: USB HID v1.10 Device [Chicony HP Elite USB Keyboard] on usb-0000:00:12.2-5.2/input1

And the same for USB3:
[ 892.290826] usb 8-2.2: new low-speed USB device number 10 using xhci_hcd
[ 892.554392] usb 8-2.2: New USB device found, idVendor=03f0, idProduct=034a, bcdDevice= 1.21
[ 892.554397] usb 8-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 892.554400] usb 8-2.2: Product: HP Elite USB Keyboard
[ 892.554401] usb 8-2.2: Manufacturer: Chicony
[ 892.554542] usb 8-2.2: Not enough bandwidth for new device state.
[ 892.554548] usb 8-2.2: can't set config #1, error -28

I'll include what you requested as dmesg.txt, but everything, including my experimenting with multiple unplugs/replugs, is in dmesg-full.txt