From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhao Yakui Subject: Re: [intel/acpi] backlight Date: Mon, 01 Dec 2008 09:08:35 +0800 Message-ID: <1228093715.4035.87.camel@yakui_zhao.sh.intel.com> References: <1227854824.3477.9.camel@hidalgo> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from mga01.intel.com ([192.55.52.88]:46045 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755728AbYLABBG (ORCPT ); Sun, 30 Nov 2008 20:01:06 -0500 In-Reply-To: <1227854824.3477.9.camel@hidalgo> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Yves-Alexis Perez Cc: "linux-acpi@vger.kernel.org" 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? > > 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? If not, please load it and see whether the interface of /sys/class/backlight/* can work. > > I know there was a lot of enhancements with OpRegion stuff for 2.6.27 > and 2.6.28, and it's maybe not finished, but are those problems known? > > Cheers, and many thanks for the good work :)