Have you tried disabling the usb hub/root device?

I'm on Arch Linux using the Linux Editor obviously.
And I had a similar issue.
I have a faulty USB hub that I use, it is mostly ok 90% of the time.
But it does this stupid thing where it like tries to detect weather you plugged something into it and show you an indicator light.
Which that feature didn't work right from the get go.
Point being turning it off fixed it for me.
Thanks, you gave me a clue as to what was wrong!