From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754154AbYFJSGi (ORCPT ); Tue, 10 Jun 2008 14:06:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752725AbYFJSGa (ORCPT ); Tue, 10 Jun 2008 14:06:30 -0400 Received: from outbound-mail-114.bluehost.com ([69.89.24.4]:34662 "HELO outbound-mail-114.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752218AbYFJSG3 convert rfc822-to-8bit (ORCPT ); Tue, 10 Jun 2008 14:06:29 -0400 From: Jesse Barnes To: Romano Giannetti Subject: Re: [regression?] Sometime (often) X come out blank (black screen) on cold boot - Intel chipset Date: Tue, 10 Jun 2008 11:06:23 -0700 User-Agent: KMail/1.9.9 Cc: Linux Kernel , "Rafael J. Wysocki" , Justin Madru References: <1213101501.21041.9.camel@pern> In-Reply-To: <1213101501.21041.9.camel@pern> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Content-Disposition: inline Message-Id: <200806101106.23899.jbarnes@virtuousgeek.org> X-Identified-User: {642:box128.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 75.111.27.49 authed with jbarnes@virtuousgeek.org} DomainKey-Status: no signature Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tuesday, June 10, 2008 5:38 am Romano Giannetti wrote: > I just opened this: http://bugzilla.kernel.org/show_bug.cgi?id=10892 . I > think itś a regression, but (read the description) I am not so sure, so > I checked regression but I have not blocked Rafael's metabug. > > Latest working kernel version: 2.6.25 > Earliest failing kernel version: After 2.6.25, exatcly don't know, probably > 2.6.26-rc3 > Distribution:Ubuntu 8.04 Hardy > Hardware Environment: toshiba U305 intel-based laptop, see > http://bugzilla.kernel.org/attachment.cgi?id=16067&action=view > Software Environment:xserver-xorg-video-intel 2:2.2.1-1ubuntu12, see also > http://bugzilla.kernel.org/attachment.cgi?id=16066&action=view > Problem Description: > > Sometime, on cold boot (after the laptop has been shut off), when the > screen switch from the Ubuntu startup to gdm, the screen goes blank. > Forever. Rebooting (warm) with the same kernel cures it, sometime. If I > reboot 2.6.25 it cures it everytime. > > Otherwise, the system seems to be working. > > It was difficult to see because I almost never do a cold boot, the laptop > is either sleeping (s2ram) or on, or (warm) rebooted when I test a new > kernel. > > Helps / tricks to gather more data when it happens are welcome. This sounds like a DUP; I remember Justin Madru had a similar issue (with Ubuntu & gdm even iirc). Is there any way you could run the latest git bits of the Intel X driver? I've added some debugging that could catch at least one of the common reasons why the display would blank like that... Thanks, Jesse