AMD iGPU passthrough won't work

diversity said:
something like this is what you want to see on the host when you run
dmesg | grep amdgpu

[ 5.084765] amdgpu 0000:06:00.0: enabling device (0006 -> 0007)
[ 5.087448] amdgpu 0000:06:00.0: amdgpu: Fetched VBIOS from VFCT
[ 5.087458] amdgpu: ATOM BIOS: 113-CEZANNE-017

ATOM BIOS: *****

And then other signs like that the driver is properly loaded in the lspci -k output

Only then it is a good time to embark on trying to pass it through
Click to expand...
Right, I’ll do a fresh install later, I’m gonna back up my samba vm and then reinstall and I’ll be in touch
 
My write-up on iGPU passthrough for Ryzen 5700U. Should apply to your 5800H as well. Been playing Halo Infinite the past 3 weeks with iGPU passthrough working great. Tested on Ryzen 5700U and 7735HS. The github repo link has everything you need, as well as the correct instructions for configuration. The repo doesn't have the 5800H VBIOS so you'll need to use the instructions for vbios.c to extract the VBIOS yourself.

https://forum.proxmox.com/threads/amd-ryzen-5700u-7735hs-igpu-passthrough-windows-11.142811/
 
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jhmc93 said:
I think I have blacklisted the amdgpu driver, I’ve not been able to get hold of a vbios for my motherboard. As i tried saving one in gpu-z and it said it not found. But is there any advice u can give on how to get it working.
Click to expand...

See my post above this reply. The github repo link has a vbios.c file that you can use to extract the VBIOS for your Ryzen iGPU.
 
diversity said:
something like this is what you want to see on the host when you run
dmesg | grep amdgpu

[ 5.084765] amdgpu 0000:06:00.0: enabling device (0006 -> 0007)
[ 5.087448] amdgpu 0000:06:00.0: amdgpu: Fetched VBIOS from VFCT
[ 5.087458] amdgpu: ATOM BIOS: 113-CEZANNE-017

ATOM BIOS: *****

And then other signs like that the driver is properly loaded in the lspci -k output

Only then it is a good time to embark on trying to pass it through
Click to expand...

@diversity are u still around???, here's my output of dmesg | grep amdgpu after a fresh install:
 

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jhmc93 said:
@diversity are u still around???, here's my output of dmesg | grep amdgpu after a fresh install:
Click to expand...

From the github instructions...

Make sure you've performed steps 1 through 4 first to ensure the kernel loads the vfio modules.

5. Load the vfio-pci driver before the original one. This prevents the host from using the GPU and allows for virtualization. These are the default AMD + Sound drivers, but you can find the ones your system is using by running lspci -nnk and checking the "Kernel driver in Use" section.

Code: 
echo "softdep radeon pre: vfio-pci" >> /etc/modprobe.d/vfio.conf
echo "softdep amdgpu pre: vfio-pci" >> /etc/modprobe.d/vfio.conf
echo "softdep snd_hda_intel pre: vfio-pci" >> /etc/modprobe.d/vfio.conf

6. Refresh the kernel modules and restart:

Code: 
update-initramfs -u -k all
shutdown -r now

7. After the restart, validate that the Kernel driver in Use for these PCI devices is vfio-pci now, with:

Code: 
lspci -nnk


This is an example of what my /etc/modprobe.d/vfio.conf looks like. The first line of your vfio.conf will probably be different based on how your computer detects hardware devices.

Code: 
options vfio-pci ids=1002:1681,1002:1640
softdep radeon pre: vfio-pci
softdep amdgpu pre: vfio-pci
softdep snd_hda_intel pre: vfio-pci
 
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jeenam said:
From the github instructions...

Make sure you've performed steps 1 through 4 first to ensure the kernel loads the vfio modules.

5. Load the vfio-pci driver before the original one. This prevents the host from using the GPU and allows for virtualization. These are the default AMD + Sound drivers, but you can find the ones your system is using by running lspci -nnk and checking the "Kernel driver in Use" section.

Code: 
echo "softdep radeon pre: vfio-pci" >> /etc/modprobe.d/vfio.conf
echo "softdep amdgpu pre: vfio-pci" >> /etc/modprobe.d/vfio.conf
echo "softdep snd_hda_intel pre: vfio-pci" >> /etc/modprobe.d/vfio.conf

6. Refresh the kernel modules and restart:

Code: 
update-initramfs -u -k all
shutdown -r now

7. After the restart, validate that the Kernel driver in Use for these PCI devices is vfio-pci now, with:

Code: 
lspci -nnk


This is an example of what my /etc/modprobe.d/vfio.conf looks like. The first line of your vfio.conf will probably be different based on how your computer detects hardware devices.

Code: 
options vfio-pci ids=1002:1681,1002:1640
softdep radeon pre: vfio-pci
softdep amdgpu pre: vfio-pci
softdep snd_hda_intel pre: vfio-pci
Click to expand...
@jeenam I followed that GitHub tutorial before and it didn’t work

@diversity are you still around
 
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jhmc93 said:
@jeenam I followed that GitHub tutorial before and it didn’t work

@diversity are you still around
Click to expand...

The dmesg output shows the amdgpu driver i
akshaylive said:
I just uploaded the correct ROM file. You can find it on github here.
Click to expand...

There are instructions on the github page that I linked with a small program called vbios.c that will extract the VBIOS. All that's needed is the build-essential package from the apt repo to compile. Same result. Much less work.
 
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