giafidis Posted July 5, 2023 Share Posted July 5, 2023 Hello everyone, I'm encountering an issue with passthrough of the Radeon Vega56 GPU (Sapphire Pulse Vega56) and its audio counterpart in a Windows 10/11 virtual machine. While the GPU passthrough works fine, the audio card associated with the GPU is not recognized by Windows. I have also tested this setup with a Linux Manjaro VM, where the sound is functioning without any problems. Here are some details regarding my configuration: unRAID version: 6.12.2 Mainboard: Gigabyte X99-UD4 CPU: E5-2699V3 GPU IOMMU group: 30 [1002:687f] 04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 XL/XT [Radeon RX Vega 56/64] (rev c3) Audio IOMMU group: 3 [1002:aaf8] 04:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 HDMI Audio [Radeon Vega 56/64] Steps I have taken so far to resolve the issue: Tried both Windows 10 and Windows 11 VMs, but encountered the same results. Configured the VM with the Q35-7.1 machine type. Attempted to bind the GPU and audio device but makes no difference. Modified the XML template for the VM, enabling the multifunction option as suggested by others. Tested both PCIe ACS override options in the VM Manager Settings. Tried both Legacy and UEFI boot options in unRAID. Additionally, I have installedthe AMD Vendor Reset Plugin from ich777 to address any potential problems from the AMD Reset Bug. Despite these efforts, I have not been able to get the GPU audio device recognized by Windows in the VM. It's worth noting that the GPU is installed in the second slot on my mainboard, and I have tested with and without the VBios ROM without any noticeable difference. My VM XML for Reference: <?xml version='1.0' encoding='UTF-8'?> <domain type='kvm'> <name>Windows 10 AMD</name> <uuid>da61cd5d-ecab-d060-bab5-b98140e093db</uuid> <metadata> <vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png" os="windows10"/> </metadata> <memory unit='KiB'>8388608</memory> <currentMemory unit='KiB'>8388608</currentMemory> <memoryBacking> <nosharepages/> </memoryBacking> <vcpu placement='static'>15</vcpu> <cputune> <vcpupin vcpu='0' cpuset='10'/> <vcpupin vcpu='1' cpuset='28'/> <vcpupin vcpu='2' cpuset='11'/> <vcpupin vcpu='3' cpuset='29'/> <vcpupin vcpu='4' cpuset='12'/> <vcpupin vcpu='5' cpuset='30'/> <vcpupin vcpu='6' cpuset='13'/> <vcpupin vcpu='7' cpuset='14'/> <vcpupin vcpu='8' cpuset='32'/> <vcpupin vcpu='9' cpuset='15'/> <vcpupin vcpu='10' cpuset='33'/> <vcpupin vcpu='11' cpuset='16'/> <vcpupin vcpu='12' cpuset='34'/> <vcpupin vcpu='13' cpuset='17'/> <vcpupin vcpu='14' cpuset='35'/> </cputune> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64' machine='pc-q35-7.1'>hvm</type> <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd</loader> <nvram>/etc/libvirt/qemu/nvram/da61cd5d-ecab-d060-bab5-b98140e093db_VARS-pure-efi.fd</nvram> </os> <features> <acpi/> <apic/> <hyperv mode='custom'> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='8191'/> <vendor_id state='on' value='none'/> </hyperv> </features> <cpu mode='host-passthrough' check='none' migratable='on'> <topology sockets='1' dies='1' cores='15' threads='1'/> <cache mode='passthrough'/> </cpu> <clock offset='localtime'> <timer name='hypervclock' present='yes'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/local/sbin/qemu</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <source file='/mnt/user/domains/Windows 10 AMD/vdisk1.img'/> <target dev='hdc' bus='virtio'/> <serial>vdisk1</serial> <boot order='1'/> <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/> </disk> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <source dev='/dev/sdj'/> <target dev='hdd' bus='virtio'/> <serial>vdisk2</serial> <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/user/isos/cyg-en-us_windows_10_enterprise_ltsc_2021_x64_dvd_d289cf96.iso'/> <target dev='hda' bus='sata'/> <readonly/> <boot order='2'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/user/isos/virtio-win-0.1.229-1.iso'/> <target dev='hdb' bus='sata'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <controller type='usb' index='0' model='qemu-xhci' ports='15'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </controller> <controller type='pci' index='0' model='pcie-root'/> <controller type='pci' index='1' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='1' port='0x10'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/> </controller> <controller type='pci' index='2' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='2' port='0x11'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/> </controller> <controller type='pci' index='3' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='3' port='0x12'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x2'/> </controller> <controller type='pci' index='4' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='4' port='0x13'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x3'/> </controller> <controller type='pci' index='5' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='5' port='0x14'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x4'/> </controller> <controller type='pci' index='6' model='pcie-root-port'> <model name='pcie-root-port'/> <target chassis='6' port='0x8'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/> </controller> <controller type='sata' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> <interface type='bridge'> <mac address='52:54:00:be:4a:ce'/> <source bridge='br0'/> <model type='virtio-net'/> <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </interface> <serial type='pty'> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='unix'> <target type='virtio' name='org.qemu.guest_agent.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='tablet' bus='usb'> <address type='usb' bus='0' port='1'/> </input> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <audio id='1' type='none'/> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0' multifunction='on'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x04' slot='0x00' function='0x1'/> </source> <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x1'/> </hostdev> <memballoon model='none'/> </devices> <seclabel type='dynamic' model='dac' relabel='yes'/> </domain> I would appreciate any insights or suggestions you may have. Thank you in advance for your help! Cheers, giafidis Quote Link to comment
Solution giafidis Posted July 10, 2023 Author Solution Share Posted July 10, 2023 I finally managed to solve the problem. The solution was to utilize the MSI Tool and enable the Radeon HDMI Sound Card option. After doing so and restarting Windows, sound became available through the GPU, even when using DisplayPort Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.