From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750736AbVLOOoE (ORCPT ); Thu, 15 Dec 2005 09:44:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750725AbVLOOnf (ORCPT ); Thu, 15 Dec 2005 09:43:35 -0500 Received: from melos.informatik.uni-rostock.de ([139.30.241.22]:1035 "EHLO melos.informatik.uni-rostock.de") by vger.kernel.org with ESMTP id S1750736AbVLOOnR (ORCPT ); Thu, 15 Dec 2005 09:43:17 -0500 From: Denny Priebe Date: Thu, 15 Dec 2005 15:42:54 +0100 To: Greg KH Cc: linux-kernel@vger.kernel.org Subject: Re: Repeated USB disconnect and reconnect with Wacom Intuos3 6x11 tablet Message-ID: <20051215144254.GA19794@nostromo.dyndns.info> References: <20051213184600.GA4283@nostromo.dyndns.info> <20051213193832.GA14047@kroah.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051213193832.GA14047@kroah.com> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 13, 2005 at 11:38:32AM -0800, Greg KH wrote with possible deletions: Hello, > > These disconnects and reconnects disappear as soon as there's > > a process reading either /dev/input/mouse0 or /dev/input/event5 > > (mouse0 and event5 according to my setup). > Sounds like a hardware problem, the kernel can't cause a device to > electronically disconnect itself like this. thanks for your reply, Greg. > I suggest plugging this into a different port, using a powered hub, or > checking that the cable is still good. I tried what you have suggested. Unfortunately, this doesn't change anything. What confuses me a bit is that theses USB disconnects do not appear as soon as I read what the tablet provides. Could it be that the usb driver doesn't check for a connect status change while there's a process reading /dev/input/{mouse,event}? so that I do not see these disconnects while reading the tablet data? Or could it be that something prevents the tablet from disconnecting itself when a process is reading the tablet data? Regards, Denny