From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexei Gilchrist Subject: getting BIOS to control screen Date: Thu, 4 Dec 2003 12:42:30 +1000 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20031204024230.GC955@physics.uq.edu.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Hi, Under ACPI my laptops screen buttons don't work (ie switching to external screen and setting the brightness). They DO work under APM though. This is a real pain as I often need to switch to an external screen and I have to reboot to do this at the moment. blundering through the DSDT ASL I came across: Method (_DOS, 1, NotSerialized) { Store (And (Arg0, 0x03), Local0) \_SB.PSRV (0xB9, 0x20, 0x01, Local0, 0x00) } If I also set bit1 to 1: And(And (Arg0, 0x03), 0x01)???? can I force it to use the BIOS ala APM? or have I lost the plot? cheers, Alexei ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/