[coreboot] Black screen during SeaBIOS boot

[awokd]

On Fri, December 15, 2017 11:10 am, Daniel K wrote:

> Starting up with coreboot and SeaBIOS, the screen is completely black for
> around 30 seconds before my on-disc bootloader (grub2) is loaded and
> displayed.
>
> I'm assuming SeaBIOS counts down with some timer before launching the
> on-disc bootloader but I don't see anything.
>
> I want to use coreboot in text-mode so I'm not including a VGA rom.

That might be why you are getting the delay. Try adding it and see. I ran
into the delay too and think that's what fixed it.

> According to lspci (attached), I have two VGA devices:

You might need to edit src/device/Kconfig with:

config MULTIPLE_VGA_ADAPTERS
        bool
        default y