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video console from grub-efi

From: Darren Hart
Subject: video console from grub-efi
Date: Tue, 06 Dec 2011 16:12:45 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:7.0) Gecko/20110927 Thunderbird/7.0

I've built a grub ia32 EFI image that works over a serial console with:

    ./grub-mkimage -p / -d ./grub-core/ -O i386-efi -o bootia32.efi \
                   boot linux fat serial part_msdos normal

However, when I try it from a video console, I get:

    error: no suitable mode found.
    Booting however

I've tried adding an assortment of modules to the image:

    ./grub-mkimage -p / -d ./grub-core/ -O i386-efi -o bootia32.efi \
                   boot linux fat serial part_msdos normal \
                   video video_cirrus video_fb videoinfo videotest \
                   efi_uga echo help lspci

This has the same end result.

>From the GRUB shell I've tried the following:

grub> videoinfo

List of supported video modes:

Legend: P=Packed pixel, D=Direct color, mask/pos=R/G/B/reserved

Adapter 'Cirrus CLGD 5446 PCI Video Driver':

  No info available

grub> videotest

error: no suitable mode found.

The grub.cfg I'm booting looks like the following:

serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1

menuentry 'boot'{
linux /vmlinuz LABEL=boot root=/dev/ram0
initrd /initrd

Can anyone help me understand what I need to do to get basic Linux
console messages to appear on the video console?


Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel

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