[coreboot] x230 - vgabios

[Michael Gerlach]

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> Extracted it via
> 
> echo 1 > /sys/devices/pci0000\:00/0000\:00\:02.0/rom cp
> /sys/devices/pci0000\:00/0000\:00\:02.0/rom vgabios.bin
> 
>> That's your problem. ROM needs to be extracted, not dumped. You
>> can workaround immediate problem by disabling checksum in SeaBIOS
>> but dumped oprom for intel is not fully functional, i.a. LCD
>> stays black with windows.

I already experienced buffer artifacts and wrong colors - quite unusable
..

As written in docs[1] i assumed this should work this way.. :-/

What is the difference between dumped and extracted vbios?

What is the correct way to extract a fully working oprom?
Via bios-extract i just get:

Using file "bios-dump.rom" (4096kB)
Error: Unable to detect BIOS Image type.



[1] http://www.coreboot.org/VGA_support#Retrieval_via_Linux_kernel



Best regards,


n3ph




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