Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754627Ab0AYSj0 (ORCPT ); Mon, 25 Jan 2010 13:39:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753165Ab0AYSjZ (ORCPT ); Mon, 25 Jan 2010 13:39:25 -0500 Received: from outbound-mail-111.bluehost.com ([69.89.18.7]:45035 "HELO outbound-mail-111.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753944Ab0AYSjY convert rfc822-to-8bit (ORCPT ); Mon, 25 Jan 2010 13:39:24 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=virtuousgeek.org; h=Received:Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=jNBzvFku2Pvvia4A7QzbsjyqIGMSTmANADOz46l1YkBFJNNK0tp3ZIUP5/4DzRn0zO2/ZH6yVwb3596jUgaGwyfnEtTWd8Treg9K7bYFkjqqmmyUCRiI/hKheqwmOvmN; Date: Mon, 25 Jan 2010 10:39:17 -0800 From: Jesse Barnes To: Manish Katiyar Cc: Pekka Enberg , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Jithin Emmanuel , Andrew Morton , Linus Torvalds Subject: Re: [Bug #15015] blank screen at random times in laptop when sitting idle Message-ID: <20100125103917.53f75e9a@jbarnes-piketon> In-Reply-To: References: <84144f021001250610q3160ea06tac5f645b84285388@mail.gmail.com> X-Mailer: Claws Mail 3.7.2 (GTK+ 2.18.3; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT X-Identified-User: {10642:box514.bluehost.com:virtuous:virtuousgeek.org} {sentby:smtp auth 75.111.28.251 authed with jbarnes@virtuousgeek.org} Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2196 Lines: 50 On Mon, 25 Jan 2010 20:14:28 +0530 Manish Katiyar wrote: > On Mon, Jan 25, 2010 at 7:40 PM, Pekka Enberg > wrote: > > On Mon, Jan 25, 2010 at 12:23 AM, Rafael J. Wysocki > > wrote: > >> This message has been generated automatically as a part of a report > >> of regressions introduced between 2.6.31 and 2.6.32. > >> > >> The following bug entry is on the current list of known regressions > >> introduced between 2.6.31 and 2.6.32.  Please verify if it still > >> should be listed and let me know (either way). > >> > >> > >> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15015 > >> Subject         : blank screen at random times in laptop when > >> sitting idle Submitter       : Jithin Emmanuel > >> Date            : 2010-01-09 16:48 (16 days > >> old) > > > > FWIW, I might have seen this on my Macbook as well (screen went > > blank but I didn't check the logs). I think I managed to unblank > > the screen by hitting the "increase brightness" key. But as you > > say, the bug doesn't trigger very often and I have no idea how to > > reproduce it at will. > > I have seen it too on my lenovo T60 with 2.6.32.2. It happens to me > frequently and has become famous as "coffee bug" in my colleagues. > Every morning when I goto office and after putting my laptop on > docking station go for coffee. Once I come back the laptop screen goes > blank, but haven't been able to manage how to get screen back. Only > option is hard reboot. This happens almost every once in two three > days. > > Let me know what information/logs I can provide to help debug this. > BTW I normally suspend my laptop at home and then resume it in office > (if that matters). Ouch, looks like our DPMS path is failing pretty hard. I'll add some folks to cc, hopefully it'll be easy to track down. -- Jesse Barnes, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/