From owner-freebsd-mobile@FreeBSD.ORG Wed Nov 17 21:29:02 2004 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9DFB416A4CE for ; Wed, 17 Nov 2004 21:29:02 +0000 (GMT) Received: from postal3.es.net (postal3.es.net [198.128.3.207]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8579543D49 for ; Wed, 17 Nov 2004 21:29:02 +0000 (GMT) (envelope-from oberman@es.net) Received: from ptavv.es.net ([198.128.4.29]) by postal3.es.net (Postal Node 3) with ESMTP id IBA74465; Wed, 17 Nov 2004 13:29:02 -0800 Received: from ptavv (localhost [127.0.0.1]) by ptavv.es.net (Tachyon Server) with ESMTP id 456935D04; Wed, 17 Nov 2004 13:29:01 -0800 (PST) To: Brad Karp In-reply-to: Your message of "Wed, 17 Nov 2004 15:08:15 EST." <20041117200832.9326743D1F@mx1.FreeBSD.org> Date: Wed, 17 Nov 2004 13:29:01 -0800 From: "Kevin Oberman" Message-Id: <20041117212901.456935D04@ptavv.es.net> cc: mobile@freebsd.org Subject: Re: acpi_video, 5.3-RELEASE, ThinkPad X31? X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Nov 2004 21:29:02 -0000 > From: Brad Karp > Date: Wed, 17 Nov 2004 15:08:15 -0500 > Sender: owner-freebsd-mobile@freebsd.org > > Greetings, all. > > I run 5.3-RELEASE on a ThinkPad X31. Using ACPI, with acpi_video loaded at > boot time (as verified by kldstat), I find no dmesg output for the acpi_video > driver; it would seem the driver cannot attach on the X31. > > I believe I need acpi_video so that my backlight turns off when I suspend; at > present, when I transition to state S3, the machine suspends successfully (no > disk noise; "moon" icon illuminated), and while the image on the display is > blanked, the power-hungry backlight remains on. > > Has anyone with an X31 (or other ThinkPad) found a fix or workaround? On my T30 I needed to add jhb's acpi_video_dpms patch and put: hw.acpi.reset_video=0 hw.syscons.no_suspend_vtyswitch=1 hw.pci.do_powerstate=1 into /etc/sysctl.conf That is the only way I found to get the backlight to turn off. (I do have acpi_video loaded, but it only seems to report on the video. I can't sert anything.) -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634