From mboxrd@z Thu Jan 1 00:00:00 1970 From: joeyli Subject: Re: Fwd: Brightness on HP EliteBook 8460p Date: Sun, 18 Dec 2011 23:47:09 +0800 Message-ID: <1324223229.10394.39.camel@linux-s257.site> References: <3123346.jTQFjj4kVk@pali-elitebook> <1323442149.20114.93.camel@linux-s257.site> <3404497.1txogKB5v8@pali-elitebook> <6900186.lBeFrD3GRB@pali-elitebook> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from victor.provo.novell.com ([137.65.250.26]:49798 "EHLO victor.provo.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751781Ab1LRPuS (ORCPT ); Sun, 18 Dec 2011 10:50:18 -0500 In-Reply-To: <6900186.lBeFrD3GRB@pali-elitebook> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Pali =?ISO-8859-1?Q?Roh=E1r?= Cc: linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org Hi Pali,=20 =E6=96=BC =E6=97=A5=EF=BC=8C2011-12-18 =E6=96=BC 11:59 +0100=EF=BC=8CPa= li Roh=C3=A1r =E6=8F=90=E5=88=B0=EF=BC=9A > On Friday 09 December 2011 16:46:29 Pali Roh=C3=A1r wrote: > > On Friday 09 December 2011 22:49:09 joeyli wrote: > > > Hi Pali, > > >=20 > > > =E6=96=BC =E4=BA=94=EF=BC=8C2011-12-09 =E6=96=BC 22:36 +0800=EF=BC= =8CLi Joey =E6=8F=90=E5=88=B0=EF=BC=9A > > >=20 > > > > ---------- Forwarded message ---------- > > > > From: Pali Roh=C3=A1r > > > > Date: 2011/7/15 > > > > Subject: Brightness on HP EliteBook 8460p > > > > To: linux-acpi@vger.kernel.org > > > >=20 > > > >=20 > > > > Hello, > > > >=20 > > > > on my HP EliteBook 8460p is not possible to set display brightn= ess > > > > when ACPI > > > > is enabled in kernel. Entries in sysfs is properly created with= out > > > > errors. But > > > > when I try write any value > > > > to /sys/class/backlight/acpi_video0/brightness > > > > nothing happened (and no error is in dmesg). When I press Fn ke= y for > > > > chaining > > > > display brightness kernel send correct key event (tested with x= ev) > > > > but > > > > nothing > > > > happened too. > > > >=20 > > > > When I disabled ACPI (acpi=3Doff in kernel command line) all Fn= keys > > > > are > > > > broken > > > > and not working (no events in xev). But brightness keys working= (I > > > > think on HW > > > > level, because xev does not see it) - increase and decrease dis= play > > > > brightness. > > > >=20 > > > > So what can I do with my notebook? I think that there is error/= bug > > > > in > > > > BIOS or > > > > ACPI because with disabled ACPI brightness working. But with > > > > disabled > > > > ACPI is > > > > notebook unuseable (no battery info, no Fn keys, no WIFI rfkill= , > > > > ...). > > > > Can > > > > somebody help me with this problem? > > > >=20 > > > > -- > > > > Pali Roh=C3=A1r > > > > pali.rohar@gmail.com > > >=20 > > > You can try to put kernel parameter: > > > acpi_osi=3D"!Windows 2009" > > >=20 > > > to /boot/grub/menu.lst, then reboot look at maybe better. > > >=20 > > > And, > > > could you please kindly share DSDT and dmidecode to me? > > >=20 > > > Plesae login by root then: > > > % acpidump > acpidump.dat > > > % dmidecode > dmidecode.log > > >=20 > > > Thanks a lot! > > > Joey Lee > >=20 > > Hello, > >=20 > > adding any acpi_osi values did not changed anything (also tried oth= er osi > > strings from decompiled DSDT table). Brightness problem is in both = BIOS and > > UEFI boot mode. > >=20 > > I attached acpidump and dmidecode output from bios and uefi mode to= o. >=20 > Did you find way how to control display brightness? >=20 > --=20 > Pali Roh=C3=A1r > pali.rohar@gmail.com I am really sorry for I am sticking on another tough issue. I will look at your DSDT tomorrow. Thanks Joey Lee -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html