GPU Passthrow need vbios

[abayoumy]

Hi
I have :
CPU: AMD Ryzen 5 PRO 4650G
MB: A520M DS3H

Cannot extrace vbios
echo 1 > rom
-bash: rom: Permission denied

any way i can got compatiblity vbios?

 

[leesteken]

Have you tried booting with a different GPU (without disabling the integrated graphics) and then read the ROM? EDIT: I do believe that that is required to get a good ROM copy.

 

[abayoumy]

Have you tried booting with a different GPU (without disabling the integrated graphics) and then read the ROM? EDIT: I do believe that that is required to get a good ROM copy.

you mean connect display to pci gpu then try to extract integrated gpu vbios?

 

[leesteken]

you mean connect display to pci gpu then try to extract integrated gpu vbios?

Yes and make sure that the integrated graphics is not used during boot! Otherwise the copied ROM will not be the original.
Since this is integrated graphics, it might be that it's impossible to get the ROM or that it's impossible to passthrough. Passthrough of discrete GPUs is much easier (but also not always possible).