From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kendall Bennett Subject: Re: [RFC] Reliable video POSTing on resume Date: Thu, 10 Feb 2005 13:20:58 -0800 Message-ID: <420BD03A.3030501@scitechsoft.com> References: <1107695583.14847.167.camel@localhost.localdomain> <420BB267.8060108@tmr.com> <20050210192554.GA15726@sci.fi> <1108066096.4085.69.camel@tyrosine> <9e473391050210121756874a84@mail.gmail.com> <1108067388.4085.74.camel@tyrosine> <9e47339105021012341c94c441@mail.gmail.com> <420BC814.4050102@scitechsoft.com> <1108069596.4085.78.camel@tyrosine> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1108069596.4085.78.camel@tyrosine> Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Matthew Garrett Cc: Jon Smirl , =?ISO-8859-1?Q?Ville_Syrj=E4l=E4?= , Bill Davidsen , Alan Cox , Pavel Machek , ncunningham-jjFNsPSvq+iXDw4h08c5KA@public.gmane.org, Carl-Daniel Hailfinger , ACPI List , Linux Kernel Mailing List List-Id: linux-acpi@vger.kernel.org Matthew Garrett said the following on 2/10/2005 1:06 PM: > On Thu, 2005-02-10 at 12:46 -0800, Kendall Bennett wrote: > > >>So perhaps this problem is something similar? > > > I don't think so - if I dd out of ROM, I get something that looks like a > video BIOS (and, indeed, I can make VBE calls to and from it). The > problem is jumping to c000:0003 and executing - this has the effect of > turning off the backlight and giving an illegal instruction error > (I /think/ - I may be getting the machine I have here confused with one > a tester has...) Laptops are a little different as they will make calls from the Video BIOS into the system BIOS, so you need to make sure that the system BIOS is also available in the execution environment. So if you are using an x86 emulator, you need to make sure the system BIOS is mapped into the emulator image and that any necessary resources it might need are available. Regards, -- Kendall Bennett Chief Executive Officer SciTech Software, Inc. Phone: (530) 894 8400 http://www.scitechsoft.com ~ SciTech SNAP - The future of device driver technology! ~ ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click