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Subject: Re: Build GRUB for UEFI (not EFI), 64 bit
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>>> You need to
>>> insmod efi_gop
>>> or (for older systems)
>>> insmod efi_uga
>>>       
>> With either efi_gop or efi_uga loaded the system simply goes black as
>> soon as I use "boot". Any idea or pointers to debugging?
>>
>>     
> Try running "videotest"
>   
>
isnmod efi_gop followed by videotest

That somewhat works. I get a black screen with a red square and
white/light blue (could be my monitor) square. And then the computer hangs.

With efi_uga. videotest just says that no videomode is available or
something similar.

Arne