From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263151AbVGOCLU (ORCPT ); Thu, 14 Jul 2005 22:11:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263154AbVGOCLO (ORCPT ); Thu, 14 Jul 2005 22:11:14 -0400 Received: from rwcrmhc12.comcast.net ([216.148.227.85]:37559 "EHLO rwcrmhc12.comcast.net") by vger.kernel.org with ESMTP id S263151AbVGOCJD convert rfc822-to-8bit (ORCPT ); Thu, 14 Jul 2005 22:09:03 -0400 From: Parag Warudkar To: Andi Kleen Subject: Re: Why is 2.6.12.2 less stable on my laptop than 2.6.10? Date: Thu, 14 Jul 2005 22:09:11 -0400 User-Agent: KMail/1.8.1 Cc: Mark Gross , linux-kernel@vger.kernel.org References: <200507140912.22532.mgross@linux.intel.com.suse.lists.linux.kernel> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200507142209.11427.kernel-stuff@comcast.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 14 July 2005 20:38, Andi Kleen wrote: > It's basically impossible to regression test swsusp except to release it. > Its success or failure depends on exactly the driver > combination/platform/BIOS version etc.  e.g. all drivers have to cooperate > and the particular bugs in your BIOS need to be worked around etc. Since > that is quite fragile regressions are common. I have always wondered how Windows got it right circa 1995 - Version after version, several different hardwares and it always works reliably. I am using Linux since 1997 and not a single time have I succeeded in getting it to suspend and resume reliably. Is it such an un-interesting subject to warrant serious effort or there is a lot of hardware documentation missing or in general the driver model and OS design itself makes it impossible to get suspend / resume right? Parag