From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964947AbWFHT3O (ORCPT ); Thu, 8 Jun 2006 15:29:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964945AbWFHT3O (ORCPT ); Thu, 8 Jun 2006 15:29:14 -0400 Received: from gw.goop.org ([64.81.55.164]:33696 "EHLO mail.goop.org") by vger.kernel.org with ESMTP id S964934AbWFHT3N (ORCPT ); Thu, 8 Jun 2006 15:29:13 -0400 Message-ID: <44886381.9050506@goop.org> Date: Thu, 08 Jun 2006 10:50:57 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 1.5.0.2 (X11/20060501) MIME-Version: 1.0 To: Matt Mackall , Linux Kernel Mailing List , netdev@vger.kernel.org Subject: Using netconsole for debugging suspend/resume Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I've been trying to get suspend/resume working well on my new laptop. In general, netconsole has been pretty useful for extracting oopses and other messages, but it is of more limited help in debugging the actual suspend/resume cycle. The problem looks like the e1000 driver won't suspend while netconsole is using it, so I have to rmmod/modprobe netconsole around the actual suspend/resume. This is a big problem during resume because the screen is also blank, so I get no useful clue as to what went wrong when things go wrong. I'm wondering if there's some way to keep netconsole alive to the last possible moment during suspend, and re-woken as soon as possible during resume. It would be nice to have a clean solution, but I'm willing to use a bletcherous hack if that's what it takes. Any ideas? Thanks, J