On Thu, Mar 06, 2014 at 10:35:24PM +0800, vichy wrote: > hi sarah: > > Can you send me the output of `sudo lsusb -v` for when the device is > > under EHCI and when it's under xHCI? Also, please take a usbmon trace, > > as described by > > http://lxr.free-electrons.com/source/Documentation/usb/usbmon.txt > > > > Start the trace just before you plug the device in. Take one trace when > > the device under EHCI, and one when it's under xHCI. > Please reference the attachment > > > > >> Below is my host environment > > > > Which kernel are you running? > Linux 3.13.0 Please try 3.13.5, as a number of known USB 3 bugs have been fixed in there since 3.13.0 thanks, greg k-h -- 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