Like Alan suggested, It is best if you disable your internal usb device. We do not know what it is yet; but look around in the bios and see if there are options to disable devices such as webcam, usb sound card, usb HID etc. A second way would be looking at your usb bus information (lsusb -v) and disable appropriate hub and see if the errors continue to occur. cd /sys/module/usbcore/drivers/usb:hub/ echo -n 'x-0:1.0' > unbind # where x is an usb bus number, 1 to 5 Once the faulty usb device is disabled; you may want to test out your hardware with external usb devices and see if everything is normal. Toan -- 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