From mboxrd@z Thu Jan 1 00:00:00 1970 From: Romano Giannetti Subject: Re: [PATCH] Rationalise ACPI backlight implementation Date: Wed, 06 Feb 2008 11:09:20 +0100 Message-ID: <1202292560.21858.5.camel@localhost> References: <20071226020325.GA21099@srcf.ucam.org> <20080128012549.GA24166@srcf.ucam.org> <20080127211013.1ddaa6a1.akpm@linux-foundation.org> <200802012246.13162.lenb@kernel.org> <20080202113008.GA4251@khazad-dum.debian.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from antispam.upcomillas.es ([130.206.70.245]:52772 "EHLO antispam.upcomillas.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760848AbYBFKJW (ORCPT ); Wed, 6 Feb 2008 05:09:22 -0500 In-Reply-To: <20080202113008.GA4251@khazad-dum.debian.net> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Henrique de Moraes Holschuh Cc: Len Brown , Andrew Morton , Matthew Garrett , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org On Sat, 2008-02-02 at 09:30 -0200, Henrique de Moraes Holschuh wrote: > On Fri, 01 Feb 2008, Len Brown wrote: > > You might check if CONFIG_ACPI_VIDEO=3Dm is set and you can load th= e "video" module. > > While the sony may be non-standard and not load, your thinkpad may = work. [...] >=20 > We really need to solve the userspace mess, though. >=20 I do not know if this is relevant... but for example, with a i915 hw here (toshiba laptop): #cat max_brightness=20 100 #echo 50 > brightness ; cat actual_brightness=20 0 #echo 60 > brightness ; cat actual_brightness=20 0 #echo 70 > brightness ; cat actual_brightness=20 70 #echo 80 > brightness ; cat actual_brightness=20 0 #echo 90 > brightness ; cat actual_brightness=20 0 #echo 100 > brightness ; cat actual_brightness=20 100 #uname -a Linux rukbat 2.6.24 #13 SMP PREEMPT Fri Feb 1 13:12:23 CET 2008 i686 GN= U/Linux which is at least strange (and probably broken). actual_brightness is real, when it says 0 backlight is off. You can imagine what happens using the backlight up/down control... flashing lights!=20 Romano --=20 Sorry for the disclaimer --- =A1I cannot stop it! -- La presente comunicaci=F3n tiene car=E1cter confidencial y es para el e= xclusivo uso del destinatario indicado en la misma. Si Ud. no es el des= tinatario indicado, le informamos que cualquier forma de distribuci=F3n= , reproducci=F3n o uso de esta comunicaci=F3n y/o de la informaci=F3n c= ontenida en la misma est=E1n estrictamente prohibidos por la ley. Si Ud= =2E ha recibido esta comunicaci=F3n por error, por favor, notif=EDquelo= inmediatamente al remitente contestando a este mensaje y proceda a con= tinuaci=F3n a destruirlo. Gracias por su colaboraci=F3n. This communication contains confidential information. It is for the exc= lusive use of the intended addressee. If you are not the intended addre= ssee, please note that any form of distribution, copying or use of this= communication or the information in it is strictly prohibited by law. = If you have received this communication in error, please immediately no= tify the sender by reply e-mail and destroy this message. Thank you for= your cooperation.=20 - 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