From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757254AbYEQPlm (ORCPT ); Sat, 17 May 2008 11:41:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754723AbYEQPlf (ORCPT ); Sat, 17 May 2008 11:41:35 -0400 Received: from www.church-of-our-saviour.ORG ([69.25.196.31]:41394 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753701AbYEQPle (ORCPT ); Sat, 17 May 2008 11:41:34 -0400 Date: Sat, 17 May 2008 11:41:31 -0400 From: Theodore Tso To: "Pallipadi, Venkatesh" Cc: linux-kernel@vger.kernel.org, Ingo Molnar , "Siddha, Suresh B" , bugme-daemon@bugzilla.kernel.org Subject: [Bug 10732] REGRESSION: 2.6.26-rc2-git4: X server failed start on X61s laptop Message-ID: <20080517154131.GA7651@mit.edu> Mail-Followup-To: Theodore Tso , "Pallipadi, Venkatesh" , linux-kernel@vger.kernel.org, Ingo Molnar , "Siddha, Suresh B" , bugme-daemon@bugzilla.kernel.org References: <924EFEDD5F540B4284297C4DC59F3DEE01119AFE@orsmsx423.amr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <924EFEDD5F540B4284297C4DC59F3DEE01119AFE@orsmsx423.amr.corp.intel.com> User-Agent: Mutt/1.5.15+20070412 (2007-04-11) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@mit.edu X-SA-Exim-Scanned: No (on thunker.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, May 17, 2008 at 06:21:18AM -0700, Pallipadi, Venkatesh wrote: > > Can you please send the complete dmesg after X failure, with patch here > and debugpat boot option. > http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2657.html With debugpat enabled, the resulting dump that landed in /var/log/messages was something like 1.6 megabytes, so it totally overflowed the dmesg buffer. I've created a Bugzilla attachment of the bzip'ed messages excerpt here: http://bugzilla.kernel.org/attachment.cgi?id=16174&action=view The patch above was only available in HTML-only mode (and I couldn't find Ingo's patch on lkml.org, so I had to reconstruct it, and then forward part it to 2.6.26-rc2-git5). What I actually used can be found here: http://bugzilla.kernel.org/attachment.cgi?id=16173&action=view I'm not sure this will be helpful for you, but this should be completely trivial for you to reproduce; just use Ubuntu Gutsy on Intel Video based laptop, with a 2.6.26-rc2-git4 or more recent kernel, and watch it fail. For me, I'll just locally revert commit 1c12c4cf since otherwise X becomes more-or-less unsuable. (Getting used to 1024x768 after using a 1600x1200 display is one thing; 800x600 is quite another, and the performance using the VESA driver is quite abysmal.) - Ted