Comment 20 for bug 522998

As mentioned in comment #5, the driver code explicitly states that suspend/resume will be implemented later (whenever that will be, has not changed as of today), so the work-around is the way to go until then. Depending on the impact of changes if this happens, this might or might not be applicable for SRU in Lucid, but this needs to be decided then.

And yes, blacklisting the xhci module completely will drive the ports in USB2.0 mode. So if there are no USB3.0 devices, this could be done as well.