Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752926Ab1D3IcN (ORCPT ); Sat, 30 Apr 2011 04:32:13 -0400 Received: from smtpout01.highway.telekom.at ([195.3.96.112]:63556 "EHLO email.aon.at" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751986Ab1D3IcI (ORCPT ); Sat, 30 Apr 2011 04:32:08 -0400 From: Melchior FRANZ To: Takashi Iwai Subject: Re: i915/kms/backlight-combo mode problem (was: Re: Linux 2.6.39-rc5) Date: Sat, 30 Apr 2011 10:32:04 +0200 User-Agent: KMail/1.13.6 (Linux/2.6.38.4; KDE/4.6.0; x86_64; ; ) Cc: Linus Torvalds , linux-kernel@vger.kernel.org, Chris Wilson , dri-devel@lists.freedesktop.org References: <201104292209.55154@rk-nord.at> In-Reply-To: X-Fingerprint: 9FFB C079 5B78 4F27 099C C6C6 7399 02D1 919B D903 X-PGP: http://members.aon.at/mfranz/melchior.franz MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Message-Id: <201104301032.05271@rk-nord.at> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 778 Lines: 22 * Takashi Iwai -- Saturday 30 April 2011: > I remember vaguely that the value zero could be interpreted as the max. > Also, with the patch, does the backlight level can be adjusted > correctly to different values? I wonder whether LBPC adjustment > really works or not on your machine. > + if (!lbpc) > + lbpc = 0xff; /* max value */ This change does *not* work on my machine. The screen stays black again. Yes, backlight adjustment generally works on this notebook, but only with "acpi_osi=Linux" on the command line. m. -- 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/