On Mon, April 22, 2013 3:36 pm, Bob van der Poel wrote:
Have you tried using the front ports with the scanner unplugged? Could be
the scanner doesn't play well with it. Or it could be the front ports use
irq16 along with the video card, other usb, and whatever. Could be the
back usb is usb2.0 and the front are not (unlikely I would think).
dmesg |tail should tell you about usb 2.0 and cat /proc/interrupts should
tell you what irq the usb port dmesg tels you about is using (and what
else is on that irq too).