From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754056AbYIVSh1 (ORCPT ); Mon, 22 Sep 2008 14:37:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752590AbYIVShN (ORCPT ); Mon, 22 Sep 2008 14:37:13 -0400 Received: from mtiwmhc12.worldnet.att.net ([204.127.131.116]:47971 "EHLO mtiwmhc12.worldnet.att.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752407AbYIVShL (ORCPT ); Mon, 22 Sep 2008 14:37:11 -0400 Message-ID: <48D7E5D7.3060703@lwfinger.net> Date: Mon, 22 Sep 2008 13:37:11 -0500 From: Larry Finger User-Agent: Thunderbird 2.0.0.16 (X11/20080720) MIME-Version: 1.0 To: LKML Subject: Logs being spammed with "Unable to enumerate USB device" Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org At times, my logs are filled with multiple copies of the following message: hub 4-0:1.0: unable to enumerate USB device on port 5 The output of lsusb is as follows: Bus 003 Device 002: ID 04f2:b016 Chicony Electronics Co., Ltd Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub The hubs are built into an HP dv2815nr laptop, and nothing is plugged in. I'm currently running v2.6.27-rc7 from the linux-2.6 git tree, but it does not seem to be a regression. In checking my back logs, my first such "storm" happened on July 25, with successive ones on September 8, 9, 12 and 21. Is this an indication of hardware failure? What further info is required? Any suggestions for debugging code to try to pinpoint the problem? Thanks, Larry