From owner-freebsd-acpi@FreeBSD.ORG Wed May 10 23:53:59 2006 Return-Path: X-Original-To: freebsd-acpi@FreeBSD.org Delivered-To: freebsd-acpi@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 28F4C16A40B for ; Wed, 10 May 2006 23:53:59 +0000 (UTC) (envelope-from nate@root.org) Received: from ylpvm15.prodigy.net (ylpvm15-ext.prodigy.net [207.115.57.46]) by mx1.FreeBSD.org (Postfix) with ESMTP id B498843D48 for ; Wed, 10 May 2006 23:53:58 +0000 (GMT) (envelope-from nate@root.org) Received: from pimout5-ext.prodigy.net (pimout5-int.prodigy.net [207.115.4.21]) by ylpvm15.prodigy.net (8.12.10 outbound/8.12.10) with ESMTP id k4ANs0g7006613 for ; Wed, 10 May 2006 19:54:00 -0400 X-ORBL: [71.139.38.236] Received: from [10.0.5.50] (ppp-71-139-38-236.dsl.snfc21.pacbell.net [71.139.38.236]) by pimout5-ext.prodigy.net (8.13.6 out.dk/8.13.6) with ESMTP id k4ANruZl234646; Wed, 10 May 2006 19:53:57 -0400 Message-ID: <44627CC9.2040005@root.org> Date: Wed, 10 May 2006 16:52:41 -0700 From: Nate Lawson User-Agent: Thunderbird 1.5.0.2 (Windows/20060308) MIME-Version: 1.0 To: veiko.palge@uni-konstanz.de References: <4b4cd5fa0605091444k4202a6dg439570bbafdc6687@mail.gmail.com> In-Reply-To: <4b4cd5fa0605091444k4202a6dg439570bbafdc6687@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-acpi@FreeBSD.org Subject: Re: samsung x05 laptop: screen gets very bright before sleep X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 May 2006 23:53:59 -0000 Veiko Palge wrote: > Hi, > > I have a samsung x05 laptop (BIOS Version 11QK, latest ver) and with > FBSD 6.1 acpi works now out of box (given one sets > acpi.hw.reset_video=0). There's one issue though: when the system > goes to sleep to S3, it turns from X to normal console, and then the > (normally black) background of the console turns very, very bright > white, with stripes seen. Is this potentially problematic for the lcd > screen? What might be the issue? Does this occur possibly on other > laptops too? Loading/ unloading acpi_video does not have any effect. LCDs work by having a backlight on all the time and selectively blocking it. So it's likely your LCD turns off before the backlight, showing a screen of all white (actually transparent) before the backlight is also turned off. With the DPMS patch, that might power off the backlight first. -- Nate