On Mon, 24 Dec 2012, Larry Finger wrote: > The problem has been bisected to commit adfa79d entitled "USB: EHCI: make > ehci-pci a separate driver". The symptom is that my NVIDIA controller again > reverts to unended logging of messages of the form "hub 2-0:1.0: unable to > enumerate USB device on port 5". A few more details would be helpful, such as the dmesg log (with CONFIG_USB_DEBUG enabled). As it is, I don't see how that commit could cause this problem. It should not have resulted in any changes in behavior -- all it did was split up a driver that was one module into two modules. > This behavior was previously fixed with commit c618759. That commit affected the ohci-hcd driver, whereas this one affects ehci-hcd. They can't possibly be related. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html