From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261914AbVHANLU (ORCPT ); Mon, 1 Aug 2005 09:11:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261976AbVHANLU (ORCPT ); Mon, 1 Aug 2005 09:11:20 -0400 Received: from pop-knobcone.atl.sa.earthlink.net ([207.69.195.64]:30127 "EHLO pop-knobcone.atl.sa.earthlink.net") by vger.kernel.org with ESMTP id S261914AbVHANLS (ORCPT ); Mon, 1 Aug 2005 09:11:18 -0400 Message-ID: <42EE1F75.6080605@earthlink.net> Date: Mon, 01 Aug 2005 09:11:17 -0400 From: Stephen Clark Reply-To: sclark46@earthlink.net User-Agent: Mozilla/5.0 (X11; U; Linux 2.2.16-22smp i686; en-US; m18) Gecko/20010110 Netscape6/6.5 X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: 2.6.13rc4 hang References: <42E6C8DB.4090608@earthlink.net> <42E7A8D8.1030809@earthlink.net> <20050729014150.6e97dfd2.akpm@osdl.org> <42EAF070.5050001@earthlink.net> <42EBA31F.9080703@earthlink.net> In-Reply-To: <42EBA31F.9080703@earthlink.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello List, I am having a problem 2.6.13rc4 described below on a HP Pavilion N5430 laptop. 1) If I cold boot with only 'lacpi' to run level 3 - shortly after I get the login prompt the laptop freezes. 2) If I cold boot with 'lacpi acpi=off pci=noacpi,usepirqmask' the system boots and does not freeze but when I try to play sound I get no interrupts from my sound card. 3) If I now warm boot from step 2 with only 'lacpi' my laptop seems to be stable and I have sound. I did this several times to try and really verify the above scenarios. Diff between dmesg output from step 1 and step 3 $ diff dmesg104550 dmesg105029 43,45c43,44 < CPU: After generic identify, caps: 0183f9ff c1c7f9ff 00000000 00000000 00000000 00000000 00000000 < CPU: After vendor identify, caps: 0183f9ff c1c7f9ff 00000000 00000000 00000000 00000000 00000000 < Enabling disabled K7/SSE Support. --- > CPU: After generic identify, caps: 0383f9ff c1c7f9ff 00000000 00000000 00000000 00000000 00000000 > CPU: After vendor identify, caps: 0383f9ff c1c7f9ff 00000000 00000000 00000000 00000000 00000000 55c54 < ACPI: setting ELCR to 0200 (from 0800) --- > ACPI: setting ELCR to 0200 (from 0820) 92c91 < audit(1122734733.300:1): initialized --- > audit(1122735011.179:1): initialized 161c160 < Detected 849.810 MHz processor. --- > Detected 850.192 MHz processor. 163c162 < powernow: Minimum speed 299 MHz. Maximum speed 849 MHz. --- > powernow: Minimum speed 300 MHz. Maximum speed 850 MHz. What is the best way to debug a hang? I there a way to turn on verbose debugging at boot? Also why would the hardware capabilities be different between a cold boot and a warm boot? Thanks for any advice, Steve