From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yves-Alexis Perez Subject: Re: [intel/acpi] backlight Date: Mon, 1 Dec 2008 12:11:58 +0100 Message-ID: <20081201111158.GA23348@corsac.net> References: <1227854824.3477.9.camel@hidalgo> <1228093715.4035.87.camel@yakui_zhao.sh.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from smtp8-g19.free.fr ([212.27.42.65]:60233 "EHLO smtp8-g19.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751367AbYLALNe (ORCPT ); Mon, 1 Dec 2008 06:13:34 -0500 Received: from smtp8-g19.free.fr (localhost [127.0.0.1]) by smtp8-g19.free.fr (Postfix) with ESMTP id 02E4A32A7CD for ; Mon, 1 Dec 2008 12:13:32 +0100 (CET) Received: from molly.corsac.net (molly.corsac.net [81.57.48.219]) by smtp8-g19.free.fr (Postfix) with ESMTP id DA5F632A7FD for ; Mon, 1 Dec 2008 12:13:31 +0100 (CET) Content-Disposition: inline In-Reply-To: <1228093715.4035.87.camel@yakui_zhao.sh.intel.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Zhao Yakui Cc: "linux-acpi@vger.kernel.org" On Mon, Dec 01, 2008 at 09:08:35AM +0800, Zhao Yakui wrote: > On Fri, 2008-11-28 at 14:47 +0800, Yves-Alexis Perez wrote: > > Hi, > > > > I'm running linux 2.6.28-rc6-00007-ged31348 on my Thinkpad T61, with > > Intel GM965. Under X, brightness keys work fine most of the time, but in > > some case it fails (for example after a dpms force off, but not always). > > Switching to console and back to X fix the problem for a time. > Will you please confirm whether the issue still exists if DPMS is not > used? I've disabled DPMS in xorg.conf (setting all times to 0) and will report back. But basically I think it was broken only after a DPMS event. > > > > Another weird stuff is that, in single user, I have no way to control > > the backlight. Using brightness key doesn't work, > > and /sys/class/backlight/acpi_video0 doesn't do anything. > Can you confirm whether the i915 driver is loaded in single user mode? It's not > If not, please load it and see whether the interface > of /sys/class/backlight/* can work. When loading it, I still only have acpi_video0 (which is good, at least I don't have two devices), but it doesnt work. Echoing stuff in brightness changes the value inside, and in actual_brightness, but the screen doesn't dim. This is using 2.6.28-rc6-00184-gd9d060a Cheers, -- Yves-Alexis