[vfio-users] RX 480 on Windows 10 guest freezes with DX11+ games

[Tomáš M.]

Update: Card behaves completely same on native windows on motherboard ASUS
H61-MK (didn't find any good LGA1155 MB in 2016).
Same behaviour, freezing in certain new games either to same whole PC
freeze or in some games just app crash.

So card will go back to the seller.

Is there any chance I might have "bricked" the card somehow during my tries
to get it running? I didn't test out the card running in native environment
neither in Linux or Windows.

On Sat, Feb 11, 2017 at 6:23 PM, Tomáš M. <pulec.mcm at gmail.com> wrote:

> I am using HD 7950 on MB Asus P8Z77-V Pro with i7-3770 on Windows 7 and
> Windows 10 for many months now using this script http://pastebin.com/
> SeyXWH3E and these boot options: i915.enable_hd_vgaarb=1 intel_iommu=on
> intel_iommu=igfx_off
>
> Only issues I had were with few games like Heroes of the Storm, Mad Max,
> which caused BSOD (maybe I didn't had "options kvm ignore_msrs=1" in
> /etc/modprobe.d/vfio.conf back then)
>
> I decided to try out out RX480, from ASUS https://www.techpowerup.
> com/vgabios/185508/asus-rx480-8192-160628
>
> Isolating gpu was simple, just blacklist amdgpu instead of radeon in
> /etc/modprobe.d/blacklist.conf and edit the ids in
> /etc/modprobe.d/vfio.conf:
>
> options vfio-pci ids=1002:67df,1002:aaf0,8086:1e31
> options kvm ignore_msrs=1
>
> and do mkinitcpio -p linux-vfio
>
> I tested that out on linux-vfio 4.8.4 kernel from https://aur.archlinux.
> org/pkgbase/linux-vfio/
>
> I tried to run via OVMF, but I only got to UEFI menu on screen connected
> to gpu.
> I was passing    "-drive if=pflash,format=raw,readonly,file=ovmf_x64.bin" and
> tried number of bin files from https://aur.archlinux.
> org/packages/ovmf-git/
> Should I have tried passing different rom for gpu or try to reinstall the
> system?
>
> But afaik Alex said there is no real advantage of using OVMF so I just
> used the same script for HD7950 and that worked, both Windows upgraded the
> drivers without problems.
>
> But only 2d games or older DX9 and lower games like: Unreal Tournament
> 2004, Freedom Fighters, Original War, Torchlight, Hearthstone worked.
> All newer games like Witcher 3, DOOM, Planet Coaster, Overwatch caused
> whole PC freeze.
> After 4-15s of the game screen went to some weird solid color and
> everything froze. I sometimes had to force shutdown, because restart button
> was not working.
> I watched dmesg -w and vfio process output on host screen and I didn't see
> any related errors, just some usb messages after starting the VM.
> Menus were okay, but Planet Coaster and Overwatch render something there
> so that was quick freeze.
> Only newer game that seemed to work for few minutes was ABZU.
> MSRS messages were ignored, there were a few of them right after Windows
> login. I am not sure if that means anything good or bad.
>
> According to MB manual first PCI 3.0 with 16 links shared some IRQ with
> USB controllers, so I tried to use 2nd with 8 links which had less IRQ,
> which didn't changed anything.
>
> When it was in there the IOMMU Group was:
> IOMMU Group 1 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200
> v2/3rd Gen Core processor PCI Express Root Port [8086:0151] (rev 09)
> IOMMU Group 1 00:01.1 PCI bridge [0604]: Intel Corporation Xeon E3-1200
> v2/3rd Gen Core processor PCI Express Root Port [8086:0155] (rev 09)
> IOMMU Group 1 02:00.0 VGA compatible controller [0300]: Advanced Micro
> Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480] [1002:67df] (rev c7)
> IOMMU Group 1 02:00.1 Audio device [0403]: Advanced Micro Devices, Inc.
> [AMD/ATI] Device [1002:aaf0]
>
> In 1st PCI-E it was one PCI Bridge less, that should be OK afaik.
>
> Right now I will try the RX480 in other PC with native Arch and Windows to
> verify if there is nothing wrong with it, but I doubt it.
>
> I tried turning off the i915 patch, not passing the usb controller (the
> 8086:1e31) but it was always the same on Windows 7 (16.12 drivers) Windows
> 10 (17.1 divers).
> Any ideas what else to try out?
>
> Thanks
>
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