Been reading through this thread, and from what I gather I will not be able to pass through onboard sfx to vm. (Due to grouping)
I am building a small NAS (unraid)/workstation (windows 10 wm) for a friend, and it would not really work without sound.
Because of requirement to fit this in a small sexy case, I had to go with itx board, and it only has one PCIe slot. I was planning to use that for a USB controller to pass through, to make life easier to plug and play mouse/keyboard/usb stuff.
I guess the only way then is to use that one pcix slot for a sound card, and manually map usb accessories like keyboard/mouse to the vm, I really wanted to avoid that with the usb controller to pass through....
M/B: ASRock - Z390M-ITX/ac
CPU: Intel® Core™ i7-8700 CPU @ 3.20GHz
HVM: Enabled
IOMMU: Enabled
Cache: 384 kB, 1536 kB, 12288 kB
Memory: 16 GB (max. installable capacity 32 GB)
Case: Lian Li PC-Q25
IOMMU group 0: [8086:3ec2] 00:00.0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
IOMMU group 1: [8086:1901] 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 07)
IOMMU group 2: [8086:3e92] 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Desktop)
IOMMU group 3: [8086:a379] 00:12.0 Signal processing controller: Intel Corporation Cannon Lake PCH Thermal Controller (rev 10)
IOMMU group 4: [8086:a36d] 00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
[8086:a36f] 00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
IOMMU group 5: [8086:a360] 00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
IOMMU group 6: [8086:a352] 00:17.0 SATA controller: Intel Corporation Cannon Lake PCH SATA AHCI Controller (rev 10)
IOMMU group 7: [8086:a33d] 00:1c.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #6 (rev f0)
IOMMU group 8: [8086:a33e] 00:1c.6 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #7 (rev f0)
IOMMU group 9: [8086:a330] 00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #9 (rev f0)
IOMMU group 10: [8086:a305] 00:1f.0 ISA bridge: Intel Corporation Device a305 (rev 10)
[8086:a348] 00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
[8086:a323] 00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
[8086:a324] 00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
[8086:15bc] 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-V (rev 10)
IOMMU group 11: [8086:1539] 02:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection (rev 03)
IOMMU group 12: [8086:24fb] 03:00.0 Network controller: Intel Corporation Dual Band Wireless-AC 3168NGW [Stone Peak] (rev 10)
IOMMU group 13: [2646:5008] 04:00.0 Non-Volatile memory controller: Kingston Technology Company, Inc. Device 5008 (rev 01)
I have enabled the PCIe ACS Override Setting, but it didn't change anything, after reboot/power cycle.
Passing the Intel UHD Graphics worked just fine, and performance looks good, so it's really just down to the sound to make this work...
Any suggestions that could help?