I'm running on kernel 3.13.0-43-lowlatency, laptop Lenovo Ideapad Y500.
I have this "xHCI xhci_drop_endpoint called with disabled ep" problems
with different USB 3.0 devices since I bought laptop at the end of year
2013. What increase possibility of this failures is long USB 3.0 cable
or using of USB 3.0 extension. But even I keep my system/kernel updated
this problem have never been solved with new kernel. I have tried
different USB 3.0 hubs, cables, enclosures and what is sad if you plug
"noncompatible device" it put into hell other devices like webcamera
internally connected into usb 3.0 hub.

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https://bugs.launchpad.net/bugs/1371233

Title:
  USB 3.0 connection is unreliable + xHCI xhci_drop_endpoint called with
  disabled ep

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