[coreboot] F2A-85M: Different VGA BIOS needed after CPU Upgrade?

[Daniel Kulesz]

Hi John,

> It sounds to me as though the PCI id's of the graphics card for the 
> upgraded CPU may be different (I could be totally wrong about that, so I 
> defer to others on the list if I'm barking up the wrong tree) and your 
> coreboot image may need to be updated accordingly. Of course, it could 
> also be the video BIOS that's the problem as you've suggested.

Thank you for the hint. I inspected that, but the PCI-IDs actually look the same:

00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7480D] [1002:9993]
(A4-5300)

and

00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon HD 8670D] (prog-if 00 [VGA controller])
(A10-6700)

Looks like the VGA BIOS is really different:

# diff vgabios_a4-5300.bin vgabios_a10_6700.bin 
Binary files vgabios_a4-5300.bin and vgabios_a10_6700.bin differ

Guess I will have to to "update" the VGA BIOS then.

Cheers, Daniel


> 
> Hi Daniel,
> 
> 
> Kind Regards,
> 
> John.
> 
> 
> On 28/06/16 09:24, Daniel Kulesz via coreboot wrote:
> > Hi folks,
> >
> > I upgraded the CPU in my F2A-85M from a A4-5300 (Trinity) to a A10-6700 (Richland). The board had Coreboot installed before with the VGA BIOS extracted from the A4-5300. However, I did not get any video output when trying to boot after the upgrade, so I replaced the flash chip with a backup with the vendor BIOS that works.
> >
> > Is it likely that the A10-6700 needs a different VGA BIOS or does this this rather look like a different issue? I don't want to experiment too much because the BIOS chips are hardware-wise pretty fragile (even when using the extractor tool).
> >
> > Cheers, Daniel
> >