Ok. Greg Kroah-Hartman asked me to post this bug in this list and CC some developers. The bug report is here: https://bugzilla.kernel.org/show_bug.cgi?id=72611 I attached what Alan Stern asked (USB debug log and usbmon trace) in the bug report. I hope it helps. Thanks. -- Linux 3.12.14: One Giant Leap for Frogkind http://www.youtube.com/DanielFragaBR http://mcxnow.com?r=danielfragabr Bitcoin: 12H6661yoLDUZaYPdah6urZS5WiXwTAUgL -- 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