Hey there,

Have successfully created 2 VMs running on different GPU, but the third one will not start. Error message "Execution error

internal error: qemu unexpectedly closed the monitor: 2018-07-18T22:45:36.257302Z qemu-system-x86_64: -device vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x6: vfio error: 0000:05:00.0: group 13 is not viable Please ensure all devices within the iommu_group are bound to their vfio bus driver."

Have previously enabled ACS Override and rebooted a number of times.

Is it a coincidence that this graphics card and audio device are in a group with a lot of other devices, whereas the video/audio devices for the ones I've set up successfully are in IOMMU groups on their own?

Relevant IOMMU groups for the 3 video/audio device sets below:

 

IOMMU group 13:	[1022:43bb] 01:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset USB 3.1 xHCI Controller (rev 02)
	[1022:43b7] 01:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset SATA Controller (rev 02)
	[1022:43b2] 01:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43b2 (rev 02)
	[1022:43b4] 02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
	[1022:43b4] 02:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
	[1022:43b4] 02:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
	[1022:43b4] 02:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
	[1022:43b4] 02:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] 300 Series Chipset PCIe Port (rev 02)
	[8086:1539] 03:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)
	[10de:1c02] 05:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 3GB] (rev a1)
	[10de:10f1] 05:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)
IOMMU group 14:	[10de:128b] 08:00.0 VGA compatible controller: NVIDIA Corporation GK208B [GeForce GT 710] (rev a1)
	[10de:0e0f] 08:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1)
IOMMU group 15:	[10de:1c03] 09:00.0 VGA compatible controller: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] (rev a1)
	[10de:10f1] 09:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)

you have identified your problem.

 

a possible solution can be found: