From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262083AbVGSTXE (ORCPT ); Tue, 19 Jul 2005 15:23:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262074AbVGSTXE (ORCPT ); Tue, 19 Jul 2005 15:23:04 -0400 Received: from mx1.redhat.com ([66.187.233.31]:65427 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S262088AbVGSTWJ (ORCPT ); Tue, 19 Jul 2005 15:22:09 -0400 Date: Tue, 19 Jul 2005 12:22:06 -0700 From: Pete Zaitcev To: DervishD Cc: linux-kernel@vger.kernel.org Subject: Re: USB debouncing? Message-Id: <20050719122206.1b690f57.zaitcev@redhat.com> In-Reply-To: References: Organization: Red Hat, Inc. X-Mailer: Sylpheed version 2.0.0beta3 (GTK+ 2.6.7; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 19 Jul 2005 18:24:25 +0200, DervishD wrote: > I have a new MP3 player, and when I disconnect it from the USB > port, my logs says: > > <30>Jul 19 18:11:05 kernel: usb.c: USB disconnect on device 00:07.3-1 address 2 > <27>Jul 19 18:11:06 kernel: hub.c: connect-debounce failed, port 1 disabled > > What is that 'connect-debounce' for? Is the port damaged? Am I > doing anything wrong? The ports are not getting completely disabled. The wording is poor. If you plug something else, hub gets a connect change, khubd will allow another debounce cycle and accept whatever happens. In this case, when you're pulling the plug the hub receives a momentary reconnect, so the software things something else was plugged. I think perhaps the resistor harness is not good in the device, or perhaps something is wrong with the connector. -- Pete