Re: GPU Passthrough on FreeBSD 14.3 (AMD Radeon RX 6900 XT and Windows 10 Pro)

From: Stephan Althaus <Stephan.Althaus_at_Duedinghausen.eu>
Date: Mon, 25 Aug 2025 14:52:16 UTC
On 8/25/25 16:47, Stephan Althaus wrote:
> On 8/24/25 23:58, Jonathan Vasquez wrote:
>> Hey all,
>>
>> I've been experimenting with trying to get my server's dedicated AMD 
>> Radeon RX 6900 XT working on a bhyve Windows 10 Pro client for gaming 
>> purposes. I've been reading a bunch of blog posts, sites, files, and 
>> videos (thanks Corvin) to try and piece things together. I've been 
>> able to get the VM to recognize the card, but still stuck on the Code 
>> 43 issue (with or without using the vBIOS I've extracted from my 
>> dedicated card and also ensuring any options needed to be on in the 
>> UEFI settings are enabled). This machine is running on an AMD Ryzen 9 
>> 7950X 16-Core Processor, so it's a full AMD setup, no Intel stuff. It 
>> technically should be relatively "easy" to get AMD working from what 
>> I've read (excluding the known AMD Hardware reset issue). I've 
>> documented everything I've done so far, and will be documenting more 
>> and simplifying the instructions as I make progress. Please let me 
>> know if you see any thing weird or anything I could try based on what 
>> I've rewritten. I'll try to give it a go and provide feedback. Thank you!
>>
>> https://xyinn.org/blog/freebsd/freebsd_bhyve_gpu_passthrough_amd
>>
>> Jonathan Vasquez
>> PGP: 34DA 858C 1447 509E C77A D49F FB85 90B7 C4CA 5279
>> Sent with ProtonMail Secure Email
>>
> Hi!
>
> i have a AMD RX6400 GPU setup running on 14.2 with win10 guest, host 
> is a intel system.
>
> i think you have to passthrough the 3/0/1 device as well!
>
> The bios.rom is extracted from this card in place ?
>
>
> Regards,
> Stephan
>
>
Ah, and be shure to reboot the whole setup, inclusive host, for every 
new test-case,
at least as long at is not guaranteed that we can live without..

Regars,
Stephan