From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750972AbWFAVjh (ORCPT ); Thu, 1 Jun 2006 17:39:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750960AbWFAVjh (ORCPT ); Thu, 1 Jun 2006 17:39:37 -0400 Received: from ping.uio.no ([129.240.78.2]:52126 "EHLO ping.uio.no") by vger.kernel.org with ESMTP id S1750723AbWFAVjh (ORCPT ); Thu, 1 Jun 2006 17:39:37 -0400 To: Lennart Sorensen Cc: Alan Stern , Andrew Morton , David Liontooth , linux-kernel@vger.kernel.org, linux-usb-devel@lists.sourceforge.net Subject: Re: USB devices fail unnecessarily on unpowered hubs References: <20060601152344.GB23746@csclub.uwaterloo.ca> From: ilmari@ilmari.org (=?utf-8?q?Dagfinn_Ilmari_Manns=C3=A5ker?=) Organization: Program-, Informasjons- og Nettverksteknologisk Gruppe, UiO Mail-Copies-To: nobody Date: Thu, 01 Jun 2006 23:39:15 +0200 In-Reply-To: <20060601152344.GB23746@csclub.uwaterloo.ca> (Lennart Sorensen's message of "Thu, 1 Jun 2006 11:23:44 -0400") Message-ID: User-Agent: Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Exiscan-Spam-Score: -7.8 (-------) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Lennart Sorensen writes: > A scanner certainly uses more power with the scanner light on than with > it off, and it starts out off until it is in use on most scanners. Of > course I have never seen a usb powered scanner, so it doesn't seem to > matter. Oh, they've been around for years. The CanoScan LiDE 25 is an example: -- ilmari "A disappointingly low fraction of the human race is, at any given time, on fire." - Stig Sandbeck Mathisen