From: "Carl Gehr" Received: from [192.168.100.201] (account carl.gehr@mcgcg.com HELO localhost) by 2rosenthals.com (CommuniGate Pro SMTP 5.1.16) with ESMTPA id 1966269 for ecs-t6x@2rosenthals.com; Wed, 25 Nov 2009 16:46:26 -0500 To: "eCS ThinkPad T60/61 Mailing List" Date: Wed, 25 Nov 2009 16:46:13 -0500 (EST) Reply-To: "Carl Gehr" Priority: Normal X-Mailer: PMMail 2.20.2382 for OS/2 Warp 4.5 In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Subject: Re: [eCS T60/T61] Screen switch Message-ID: On Tue, 17 Nov 2009 15:39:09 -0500, Lewis G Rosenthal wrote: >Ah... I think we may have been talking about: > > gaoption lcdusebios [auto | on | off] > > This option controls whether the LCD BIOS is used on laptops. This > option defaults to auto, which means > that the BIOS will be used when the laptop is booted on the LCD > panel, and will not be used when it is > booted on an external CRT monitor. If you frequently switch between > LCD and CRT screens, you may > wish to set this option to on, so that the graphics modes will be > limited to those that can be properly > displayed on the LCD panel. Note that many laptop chipset drivers > have been updated to have more > intelligent switching code, and will ignore this option. I'm not real clear on what/how this works. I have tried all kinds of combinations when I need to do a presentation. Even with: LCD + VGA set in the BIOS, the best I can get is to have the projector and no LCD - PROVIDED I boot with the projector connected at boot time. If I boot without the projector, all the output goes to the LCD and there is no way to switch. FWIW, I should mention that I am using the SNAP graphics driver. And a search of the boot drive shows a file: O:\SNAP\gaoption.exe So, a question for Julian: Are you using SNAP or the Panorama driver. I've never tried Panorama. Should I be able to run the gaoption.exe to switch displays? I've never tried that. And, I don't have a projector or even a spare CRT to use for testing. Carl