From owner-freebsd-mobile@FreeBSD.ORG Wed Oct 30 15:42:16 2013 Return-Path: Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 8DA49FE7 for ; Wed, 30 Oct 2013 15:42:16 +0000 (UTC) (envelope-from henry.hu.sh@gmail.com) Received: from mail-ie0-x22b.google.com (mail-ie0-x22b.google.com [IPv6:2607:f8b0:4001:c03::22b]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 603342BA5 for ; Wed, 30 Oct 2013 15:42:16 +0000 (UTC) Received: by mail-ie0-f171.google.com with SMTP id tp5so2659979ieb.30 for ; Wed, 30 Oct 2013 08:42:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=p2RIpZ/pKU7TUbHNOiTyjzyZekoA0K0Xo9SNxfMEJlM=; b=oMJYJ5vJPfxOk0YiqnOduH3Hx44EDxDc7WPs8Tok1/fD6kz8yxoYlXIQGfflmvDr0p m9oxCehBDpN00hMW16s0jk4xApe1vLq0nuEBwRiTsJRk9P+5a/Y9UWr4h+kJc0CXJGxs NmCfYEYXHdqNiLoCS5rPCpyKm0EdskK6zzaWSvPw5Zp/KVyGz5S4Ta5VkD8fYCIPAwyH 87PKqWYCx2c8BRWYhYVAs2w6veX5muzxQtFpQI9PGkwnaoS6AwX1HFgxhJR9dJBVN8qs tNaWUlQEC0u/eBG8PZgeER7p+3LdMFO6+qbrO80VQowFQQ0oZNiNA02ZMMgeYLvGAFLz rbbA== X-Received: by 10.50.118.41 with SMTP id kj9mr2892256igb.9.1383147735763; Wed, 30 Oct 2013 08:42:15 -0700 (PDT) MIME-Version: 1.0 Received: by 10.64.72.134 with HTTP; Wed, 30 Oct 2013 08:41:55 -0700 (PDT) In-Reply-To: <527121F5.7030705@yandex.ru> References: <524C3747.6060900@yandex.ru> <527121F5.7030705@yandex.ru> From: Henry Hu Date: Wed, 30 Oct 2013 11:41:55 -0400 Message-ID: Subject: Re: ASUS U46E laptop brightness To: Sergiy Mikhailushko Content-Type: text/plain; charset=KOI8-R X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: freebsd-mobile@freebsd.org 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 15:42:16 -0000 On Wed, Oct 30, 2013 at 11:12 AM, Sergiy Mikhailushko wrote: > > 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') > > I'm using ASUS UX51VZ and I can use this to adjust the brightness: acpi_call -p "\_SB.ATKD.SPLV" -i $2 acpi_call -p "\ISMI" -i 154 I found these statements in acpidump, so you may find similar statements. > 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. > > > > > > > ______________________________**_________________ > freebsd-mobile@freebsd.org mailing list > http://lists.freebsd.org/**mailman/listinfo/freebsd-**mobile > To unsubscribe, send any mail to "freebsd-mobile-unsubscribe@**freebsd.org > " > -- Cheers, Henry