From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Bagwell Subject: Re: [Acpi4asus-user] 1005PE's and backlight controls Date: Wed, 14 Apr 2010 21:00:31 -0500 Message-ID: References: <20100414164030.GA14758@srcf.ucam.org> <20100414172608.GA15965@srcf.ucam.org> <1271295002.7167.187.camel@rzhang1-desktop> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1271295002.7167.187.camel@rzhang1-desktop> Sender: platform-driver-x86-owner@vger.kernel.org To: Zhang Rui Cc: Matthew Garrett , Alan Jenkins , ACPI Devel Maling List , "acpi4asus-user@lists.sourceforge.net" , "platform-driver-x86@vger.kernel.org" List-Id: linux-acpi@vger.kernel.org On Wed, Apr 14, 2010 at 8:30 PM, Zhang Rui wrote: > On Thu, 2010-04-15 at 06:18 +0800, Chris Bagwell wrote: >> On Wed, Apr 14, 2010 at 12:26 PM, Matthew Garrett wrote: >> > On Wed, Apr 14, 2010 at 12:14:04PM -0500, Chris Bagwell wrote: >> > >> >> Does the acpi-video logic not have logic on its own to send key >> >> events? =A0So I guess laptops that don't have custom modules to h= andle >> >> this type of stuff don't get visual feedback from gnome-power-man= ager? >> > >> > It does, but it's dependent upon the firmware sending them. >> >> I think the following tells me firmware is sending them. =A0If I lea= ve >> acpi_osi=3D"Windows 2009" so that eeepc_laptop doesn't get loaded, I= see >> events like this on /pro/acpi/event: >> >> video LCDD 00000087 00000000 >> video LCDD 00000087 00000000 >> video LCDD 00000086 00000000 >> video LCDD 00000086 00000000 >> >> Thats a couple decreases followed by a couple increases. >> > I have a EEEpc 1005PE. I'm looking at the backlight problem on this > machine, but it seems to be different from this one. > > The hotkey seems to work perfectly when ACPI video driver is loaded. > i.e. I get a single hotkey event when pressing the hotkey and the val= ue > of /sys/class/backlight/acpi_video0/brightness changes correctly. > > The only problem I get is that the actual brightness does not change > consistently. > say, there are 15 brightness levels in all, > level 0, level 5 and level 12 give me a screen with lowest brightness= =2E > If I want to get maximum backlight, I need to set it to level 4 or le= vel > 11. If I do not set acpi_backlight=3Dvendor and then change brightness by writing to above /sys/* link this is same behaviour I see as well. If I use Fn-F5 and Fn-F6, I do not see the issue (brightness increments linearly). I believe thats because events are not sent to /dev/input/event* and so software (gnome-power-manager) is never notified and won't wrote to /sys/*. If I launch power manager preferences and change brightness then I do see issue. In this case, I'm using Fedora 13 beta's kernel 2.6.33.2-41. > > could you tell me your BIOS version please? Yesterday, I was running 0901 and today I'm running 1003. Same behaviour in both cases. -- To unsubscribe from this list: send the line "unsubscribe platform-driv= er-x86" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html