M0CRT Posted April 18, 2021 Share Posted April 18, 2021 Hi All Strange issue with passthrough of my 1660S. Due to USB breakout requirements, I've forced MMU groups to split out. pcie_acs_override=downstream,multifunction vfio_iommu_type1.allow_unsafe_interrupts=1 I now have the GPU, Audio and 'USB Controller' all in their own MMU group with no sharing. IOMMU group 32:[10de:21c4] 0a:00.0 VGA compatible controller: NVIDIA Corporation TU116 [GeForce GTX 1660 SUPER] (rev a1) IOMMU group 33:[10de:1aeb] 0a:00.1 Audio device: NVIDIA Corporation TU116 High Definition Audio Controller (rev a1) IOMMU group 34:[10de:1aec] 0a:00.2 USB controller: NVIDIA Corporation TU116 USB 3.1 Host Controller (rev a1) On the Windows 10 VM Config, I assign the GPU and sound card as expected but receive the following error: internal error: qemu unexpectedly closed the monitor: 2021-04-18T08:32:22.076398Z qemu-system-x86_64: -device vfio-pci,host=0000:0a:00.1,id=hostdev1,bus=pci.9,addr=0x0: vfio 0000:0a:00.1: failed to setup container for group 33: Failed to set iommu for container: Operation not permitted Seeing that the audio controller is in a separate, isolated MMU group, I'm struggling to understand why I'm facing this issue. Any ideas? HP MP350P Gen 8 with latest bios. Thanks Mo tower-diagnostics-20210418-0934.zip Quote Link to comment
damnshaneisthatu Posted August 26, 2021 Share Posted August 26, 2021 Did you resolve this, @M0CRT? I'm dealing with a similar issue. Quote Link to comment
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