Date: Wed, 30 Oct 2013 11:41:55 -0400 From: Henry Hu <henry.hu.sh@gmail.com> To: Sergiy Mikhailushko <ooomka@yandex.ru> Cc: freebsd-mobile@freebsd.org Subject: Re: ASUS U46E laptop brightness Message-ID: <CAEJt7hYwNgSz8MyA6V_=JSQ%2B4LTm1SHuxsH4G94fRuaqyTxpzA@mail.gmail.com> In-Reply-To: <527121F5.7030705@yandex.ru> References: <524C3747.6060900@yandex.ru> <527121F5.7030705@yandex.ru>
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On Wed, Oct 30, 2013 at 11:12 AM, Sergiy Mikhailushko <ooomka@yandex.ru>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<http://lists.freebsd.org/mailman/listinfo/freebsd-mobile> > To unsubscribe, send any mail to "freebsd-mobile-unsubscribe@**freebsd.org<freebsd-mobile-unsubscribe@freebsd.org> > " > -- Cheers, Henry
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