Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753204Ab1EDHHK (ORCPT ); Wed, 4 May 2011 03:07:10 -0400 Received: from novprvlin0050.provo.novell.com ([137.65.248.33]:47371 "EHLO novprvlin0050.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753073Ab1EDHHI (ORCPT ); Wed, 4 May 2011 03:07:08 -0400 Message-Id: <4DC187B7020000230002C237@novprvlin0050.provo.novell.com> X-Mailer: Novell GroupWise Internet Agent 8.0.2 Date: Wed, 04 May 2011 01:07:03 -0600 From: "Joey Lee" To: Cc: , , , , , Subject: Re: i915/kms/backlight-combo mode problem (was: Re: Linux 2.6.39-rc5) References: <201104301032.05271@rk-nord.at> <201104301334.53928@rk-nord.at> In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1786 Lines: 54 Hi Melchior, 於 一，2011-05-02 於 14:08 +0200，Takashi Iwai 提到： > At Sat, 30 Apr 2011 13:34:51 +0200, > Melchior FRANZ wrote: > > > > Dropping Linus from the CC. > > > > > > * Takashi Iwai -- Saturday 30 April 2011: > > * * At Sat, 30 Apr 2011 10:32:04 +0200, Melchior FRANZ wrote: > > > > Yes, backlight adjustment generally works on this notebook, but only > > > > with "acpi_osi=Linux" on the command line. > > > > > > acpi_osi quirk should be better added statically, then. > > > > No, I guess the problem here is that acer_wmi doesn't support this > > machine yet. I told the ACER WMI maintainer and sent a DSDT image, > > but this message was thoroughly ignored. > > > > > > $ dmesg|grep -i acer > > [ 0.000000] DMI: Acer TM5735/BA51_MV, BIOS V1.04 09/23/2010 > > [ 71.850534] acer_wmi: Acer Laptop ACPI-WMI Extras > > [ 72.350278] acer_wmi: Unable to detect available WMID devices > > > > Machine: Acer Travelmate 5735Z-452G32Mnss > > Hm, but the backlight control is done via the standard ACPI, no? > If so, the fact that acer_wmi doesn't work sounds irrelevant. > > BTW, did you try my previous patch? > > > Takashi Yes, please try Takashi's previous patch. I am tracing bko#34142, but this issue does not related to your backlight control, because there have _BCM, _BQC declare in your DSDT, your machine MUST SUPPORTED by standard acpi backlight interface. Even the acer-wmi can probed on your machine, it cann't help anything for your backlight control. Thank's a lot! Joey Lee -- 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/