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Sorry I'm out of ideas then :( It seems to really be something with the driver not supporting VMs. Even on a Windows 10 VM, all I could see was my mouse moving as I moved it, but the entire rest of my screen was pixelated mess.

Saw this post on L1T as well, the last comment proposes a possible solution - https://forum.level1techs.com/t/radeon-vii-not-initialising-psp-fails/143654/2 Essentially requiring iommu=soft since there may be issues with AMD IOMMU drivers. Worth a try? Maybe with and without passing through the...

Never tried this, but it could be helpful: https://www.reddit.com/r/Proxmox/comments/l0cjve/solved_ryzen_apu_vaapi_decoding_on_proxmox/

@thex interesting output, thanks for sharing. I have no updates sadly, and as user avw wrote, it's likely that the drivers don't expect the iGPU in a VM. Also, I'm the user CodingMicrobe over on the Unraid forums ;) Having said that, the errors you are seeing are very curious. It looks like the...

I will look into those options. Thanks again for your time and help! Maybe one day a future driver will allow it to work with SeaBIOS so I could see more than jut a cursor moving around over pixelated output. Cheers!

I tried the options you suggested, and no real change. Screen still stuck on "Loading initial ramdisk" and I guess that means the VM can't "grab" control of the iGPU. Not sure if you saw my post above yours (#27), but at one point I did manage to get the VM to "grab" the iGPU I think, because...

Conversely, if I remove amdgpu from the pve-blacklist.conf file, and I remove the GPU and audio devcie from /etc/modprobe.d/vfio.conf (so it doesn't bint VFIO on boot), and I remove the video=efifb: off from /etc/default/grub -- then when I start my VM with OVMF, with or without VBIOS, the...

Looks like I was running 6.3-2 instead of latest 6.3-6, and now I see the option. Sorry about that, I just downloaded it so I thought I was latest but I guess not. Tried out OVMF (q35 5.1 and 5.2), can't even get it to initialize the iGPU, screen is still on "Loading initial ramdisk..." from...

I can't seem to find the option to switch to other q35 versions, either in the "create a VM" wizard, or the "hardware" tab once I made a VM, even with advanced enabled in the wizard... I also find it hard to believe that the VBIOS which I extracted from different BIOSes all say type 0, since...

The reason I went with SeaBIOS was because my VBIOS (which I don't pass through in the PCIe device declaration in PVE, since I found it made no difference) doesn't support UEFI. I tested using the guide in Proxmox forums here...

I've been doing a bit more digging and decided to run GPU-Z tool to get some detailed GPU info, on both W10 native and W10 guest VM on PVE. Results below, I highlighted the differences... (this was while connected to VM via RDP, not sure if that has an effect). Not sure why it says Bus is PCI...

Also I think motherboard is the deciding factor for IOMMU groups. In this case, I'm using the ASRock X300W DeskMini case/motherboard kit, there are no other PCIe slots, just a socket for the CPU and onboard audio. However, the AMD APUs shouls all look the same in terms of IOMMU groupings for...

Something else I noticed, although the screen looks very bad (again, see my previous comment above for a photo example), the mouse is still fully responsive and I see the cursor moving. Sometimes if I click enough randomly it will "crash" the driver and Code 43 will appear in Device Manager for...

I did get pass through working though, the problem arises when I install AMD drivers in the guest OS, then I see garbage output to VGA/HDMI/DP. And without drivers, very poor performance watching videos, moving windows around, etc.

My bad, I mistyped (clearly haven't had my morning coffee yet). I meant to say my IOMMU groups look the same in 5.11.7-1 as they do in the current stable kernel in PVE. Of course, if I turn ACS override ON then I see many more groups (9 total), since each device gets its own, as per my post...

Thanks for the reply. I don't think IOMMU groups are the issue per se, since the problem really seems to be with the AMD driver itself which Windows installs (everything works fine, although performance isn't ideal, until I install the driver). In any case, I've installed kernel 5.11.7-1 and my...

Hi @pottproll, WITHOUT the ACS override patch, my IOMMU groups look like this (notice how iGPU 03:00.0 and its audio device 03:00.1 are in the same group as a bunch of other stuff, preventing me from passing it through without causing system to hang): IOMMU Group 0 00:01.0 Host bridge [0600]...

@Stefan_R thanks for the tip. I got passthrough of my 4750G APU iGPU working somewhat to a W10 guest, and it works pretty well (albeit limited to ~24-30Hz refresh rates and no hardware acceleration) until installing AMD GPU drivers which messes everything up. Below is an image of what happens...

Hello! I recently built a SFF system with the newer Ryzen 7 "Renoir" 4750G APU and ASRock X300 case/motherboard combo. I'm hoping to set it up with PVE (v6.3-1) with several guests, and would like to pass through its integrated GPU (Radeon RX Vega-based) to a Windows 10 VM. According to this...