Dell XPS 13 9333, Ubuntu 14.04, 3.19.0-26-generic, USB 3.0 HDD enclosure
(ASMedia AS2105). Directly connected to USB3 port - not detected at all.
Connected to USB2.0 hub - detected and perfectly worked. Connected to
USB 3.0 hub (ASIX AX88179) - determined ~50% times (~50% no any line in
syslog after plug in). When it successfully determined in USB3 hub -
works after it without any problem (however my test was short - 15 min
rsync with a lot of files (my home folder))

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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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