Re: lfs 12.3-rc1: 10.4. Using GRUB to Set Up the Boot Process

On 2/21/25 11:20 PM, Hans Meier ([email protected] via lfs-support Mailing List) 
wrote:
> Hello,
> 
> In '10.4.4. Creating the GRUB Configuration File' a new configuration
> parameter has been added: set gfxpayload=1024x768x32
> 
> Using qemu on the final image results in a black screen unfortunately.
> Without this parameter everything works fine.
> 
> qemu-system-x86_64 -m 800 -drive file=image.img
> 
> Was there any particular reason adding this parameter end of October 2024?

It's in the command explanations.

The set gfxpayload=1024x768x32 command sets the
resolution and color depth of the VESA framebuffer to be passed to the
kernel.  It's necessary for the kernel SimpleDRM driver to use the
VESA framebuffer.  You can use a different resolution or color depth
value which better suits for your monitor.

You do not have qemu set up to support this.  You can try passing
-vga std to qemu or just remove the gfxpayload line.

Also see https://www.gnu.org/software/grub/manual/grub/html_node/gfxpayload.html

   -- Bruce

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