From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750920AbWD3Ekh (ORCPT ); Sun, 30 Apr 2006 00:40:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750933AbWD3Ekh (ORCPT ); Sun, 30 Apr 2006 00:40:37 -0400 Received: from mail.kroah.org ([69.55.234.183]:7124 "EHLO perch.kroah.org") by vger.kernel.org with ESMTP id S1750920AbWD3Ekg (ORCPT ); Sun, 30 Apr 2006 00:40:36 -0400 Date: Sat, 29 Apr 2006 21:36:16 -0700 From: Greg KH To: Otto Wyss Cc: linux-kernel@vger.kernel.org Subject: Re: USB-Keyboard through an USB-Switchbox Message-ID: <20060430043616.GA13913@kroah.com> References: <44526C3E.5080200@orpatec.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44526C3E.5080200@orpatec.ch> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 28, 2006 at 09:25:50PM +0200, Otto Wyss wrote: > I'm using now again a second computer with a single USB keyboard through > an USB switchbox. Switching between computers is equivalent to connect > and disconnect the USB keyboard rather often. After this > disconnect/connect I still happen to experience times when the USB stack > can't synchronize again, leaving me without access to the computer > (kernel 2.6.12-9). I since I've mentioned this already several years ago > I though this might be solved but it seems Linux isn't able to build a > state-of-the-art USB stack which is able to synchronize in _each_ case. > > Is there anything I can do to help find out why the USB doesn't work? Is > there a log anywhere on they system? The kernel log can be seen by running 'dmesg'. Also, try using a newer kernel version, 2.6.12 is over a year old. And, if 2.6.16 still has problems, please let the people at the linux-usb-devel mailing list know about it. thanks, greg k-h