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 : Advanced Micro Devices, Inc. [AMD/ATI] Trinity
[Radeon HD 7480D] [1002:9993]
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon
HD 8670D] (prog-if 00 [VGA controller])
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.
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