From owner-freebsd-mobile@FreeBSD.ORG Wed Oct 30 15:13:02 2013 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id A8B0D200 for ; Wed, 30 Oct 2013 15:13:02 +0000 (UTC) (envelope-from ooomka@yandex.ru) Received: from forward4l.mail.yandex.net (forward4l.mail.yandex.net [IPv6:2a02:6b8:0:1819::4]) by mx1.freebsd.org (Postfix) with ESMTP id 3BDA72953 for ; Wed, 30 Oct 2013 15:13:01 +0000 (UTC) Received: from smtp11.mail.yandex.net (smtp11.mail.yandex.net [95.108.130.67]) by forward4l.mail.yandex.net (Yandex) with ESMTP id 484661440D68 for ; Wed, 30 Oct 2013 19:12:59 +0400 (MSK) Received: from smtp11.mail.yandex.net (localhost [127.0.0.1]) by smtp11.mail.yandex.net (Yandex) with ESMTP id 096F37E0869 for ; Wed, 30 Oct 2013 19:12:58 +0400 (MSK) Received: from ip-230-38-120-176.corp.langate.ua (ip-230-38-120-176.corp.langate.ua [176.120.38.230]) by smtp11.mail.yandex.net (nwsmtp/Yandex) with ESMTP id al7PllUpMN-CwTC7JWa; Wed, 30 Oct 2013 19:12:58 +0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1383145978; bh=LnxLIlUY5YAH+vlX3pszBNe14yOdkglrClqTNfGuWvU=; h=Message-ID:Date:From:User-Agent:MIME-Version:To:Subject: References:In-Reply-To:X-Forwarded-Message-Id:Content-Type: Content-Transfer-Encoding; b=J3OtWkVQ06o1Id/JhNGdq98N0EsVZ6G4oRDxhhAEwWwKsbx/d2Fe2JPQujI/UnLGb ugD2AVVlpKs+7IXITJn6jdS22iNS1ysPosOExeD8A+YL0eWLgRwA9xQEPbioo6/2/v iUd60RaMFTtmjeigCtkA7MxXW4kglTG6ZDGOihSY= Authentication-Results: smtp11.mail.yandex.net; dkim=pass header.i=@yandex.ru Message-ID: <527121F5.7030705@yandex.ru> Date: Wed, 30 Oct 2013 17:12:53 +0200 From: Sergiy Mikhailushko User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 MIME-Version: 1.0 To: freebsd-mobile@freebsd.org Subject: ASUS U46E laptop brightness References: <524C3747.6060900@yandex.ru> In-Reply-To: <524C3747.6060900@yandex.ru> X-Forwarded-Message-Id: <524C3747.6060900@yandex.ru> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-mobile@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Mobile computing with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Oct 2013 15:13:02 -0000 Hi all Could you please help me with a little annoying problem concerning laptop backlight? I've got ASUS U46E laptop with Intel GMA graphics running FreeBSD 9-STABLE amd64. The problem is that backlight is always set to maximum value. Pressing Fn+F5 (brightness down) has no effect, just yielding the following to /var/log/messages: ACPI Error: Result stack is empty! State=0xfffffe00017fa800 (20110527/dswstate-113) ACPI Exception: AE_AML_NO_RETURN_VALUE, Missing or null operand (20110527/dsutils-695) ACPI Exception: AE_AML_NO_RETURN_VALUE, While creating Arg 0 (20110527/dsutils-821) ACPI Error: Method parse/execution failed [\_SB_.PCI0.GFX0.GCBL] (Node 0xfffffe000181f600), AE_AML_NO_RETURN_VALUE (20110527/psparse-560) This happens both in console and X Window mode What I've tried: 1) Flashed the latest BIOS version from ASUS website (ver301) 2) Upgraded OS to the latest STABLE version (last upgrade Oct 28 2013) 3) Loading acpi_asus module: # kldload acpi_asus # sysctl -a | grep asus # 4) Loading acpi_video module: # sysctl hw.acpi.video.lcd0.active=1 hw.acpi.video.lcd0.active: 0 -> 0 # sysctl hw.acpi.video.lcd0.fullpower=60 hw.acpi.video.lcd0.fullpower: 100 -> 60 # sysctl hw.acpi.video.lcd0.economy=60 hw.acpi.video.lcd0.economy: 77 -> 60 # sysctl hw.acpi.video.lcd0.brightness=60 hw.acpi.video.lcd0.brightness: 60 -> 60 Values are changed but brightness doesn't 5) Using acpi_call utility (not sure what value should be changed, tried acpi_call -p '\_SB_.PCI0.GFX0.GCBL' and acpi_call -p '\_SB_.PCI0.LPCB.EC0_._Q0E' -- both resulting in Unknown object type '0') 6) Writing to freebsd-questions and freebsd-acpi mailing lists -- no replies so far # uname -a FreeBSD toysrv 9.2-STABLE FreeBSD 9.2-STABLE #0 r257265: Mon Oct 28 23:05:31 EET 2013 oomka@toysrv:/usr/obj/usr/src/sys/TOYSRV amd64 # acpidump -dt > u46e.asl (http://tny.cz/452a2978) I used to run i386 FreeBSD on this laptop -- the brightness control was okay on it. There were often kernel panics on that architecture so I've switched to amd64. Panics disappeared and the things work fine so far, except the screen brightness. I know that my problem isn't critical when I'm working on daylight or with external LCD display, but when I have to work at the laptop at night -- this spotlight really drives me crazy. Thank you in advance for your help.