[coreboot] Using as default external monitor for booting in x230

[Car.cuevas]

Hi,

thanks for both answers Nico and Ron,

Well actually, for me what's important is that I can be able to see through DP2 from the docker, If I can alter actually the backlight sequence, and setup the DP2 as the first one, but I have to say sorry because from your explanations I am not sure if it means that with Coreboot, the OS would be able to handle to show through the DP2 the video signal or not?.. For the mod, I have now actually in the BIOS didn't have to do a thing, just to set up in the bios as default screen the DP2, but nothing else was needed, actually the operating system detects as they were 2 screens and manage them.

Thanks once more for your help :)





-------- Original Message --------
Subject: Re: [coreboot] Using as default external monitor for booting in x230
Local Time: January 15, 2017 7:20 PM
UTC Time: January 15, 2017 6:20 PM
From: rminnich at gmail.com
To: Nico Huber <nico.h at gmx.de>, Car.cuevas <car.cuevas at protonmail.com>, coreboot at coreboot.org <coreboot at coreboot.org>





On Sun, Jan 15, 2017 at 10:09 AM Nico Huber <nico.h at gmx.de> wrote:


It wouldn't matter as the current native gfx code in coreboot doesn't
support external displays.

Yes. I started that code as a "let's get chromebooks to not use the video binary blob" project. That was five years ago, if you can believe it. I did not realize when I started it just how complicated it would get. But external display support was not a goal. Of course, with support from the chipset vendor it would have gone much more smoothly and we could have all been using open source gfx code for five years now, but you all know how that story ends ...

Note that x86 chromebooks still use the VGA BIOS.



If you want OSS for the gfx initialization, there's also libgfxinit
(written in Ada, see 3rdparty/libgfxinit in the coreboot tree). It can
enable external displays but would need some patching to make the panel
power and backlight control work with that.

Yes. I think the Ada code is far superior to the C code at this point. I think it makes sense to focus on extending it as opposed to working on the C gfx code.

ron
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