Hello Hive Mind,

I am a big noob here so I apologize if I am over/undersharing. I have been building a home server for the past few years and recently wanted to get a gaming VM going on Unraid, specifically Windows 10. From the research Ive done this should be 100% possible I just keep running into some hiccup. I will leave the steps I have taken below but I am unable to get the VM to boot with my GPU selected as the Graphics Card in the VMs settings. It will instantly give me the "internal error: Unknown PCI header type '127' for device '0000:01:00.0'" error code without even trying to start up. The odd thing to me is I have previously used this VM and installed all the software I needed using internal graphics before I received the GPU. I know the VM will work without using GPU passthrough but as soon as I try to use it we get that error.

My VM XML:

<?xml version='1.0' encoding='UTF-8'?>

<domain type='kvm'>

<name>GVM</name>

<uuid>d208131f-d85f-662b-4d53-563aab316d59</uuid>

<description>for gooning, I mean gaming</description>

<metadata>

<vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png" os="windows10" webui=""/>

</metadata>

<memory unit='KiB'>16777216</memory>

<currentMemory unit='KiB'>16777216</currentMemory>

<memoryBacking>

<nosharepages/>

</memoryBacking>

<vcpu placement='static'>12</vcpu>

<cputune>

<vcpupin vcpu='0' cpuset='2'/>

<vcpupin vcpu='1' cpuset='3'/>

<vcpupin vcpu='2' cpuset='4'/>

<vcpupin vcpu='3' cpuset='5'/>

<vcpupin vcpu='4' cpuset='6'/>

<vcpupin vcpu='5' cpuset='7'/>

<vcpupin vcpu='6' cpuset='8'/>

<vcpupin vcpu='7' cpuset='9'/>

<vcpupin vcpu='8' cpuset='10'/>

<vcpupin vcpu='9' cpuset='11'/>

<vcpupin vcpu='10' cpuset='12'/>

<vcpupin vcpu='11' cpuset='13'/>

</cputune>

<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/d208131f-d85f-662b-4d53-563aab316d59_VARS-pure-efi.fd</nvram>

</os>

<features>

<acpi/>

<apic/>

</features>

<cpu mode='host-passthrough' check='none' migratable='on'>

<topology sockets='1' dies='1' clusters='1' cores='6' threads='2'/>

<cache mode='passthrough'/>

</cpu>

<clock offset='localtime'>

<timer name='hpet' present='no'/>

<timer name='hypervclock' present='no'/>

<timer name='pit' tickpolicy='delay'/>

<timer name='rtc' tickpolicy='catchup'/>

</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='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>

<disk type='file' device='disk'>

<driver name='qemu' type='raw' cache='writeback' discard='ignore'/>

<source file='/mnt/user/domains/VM/vdisk1.img'/>

<target dev='hdc' bus='sata' rotation_rate='1'/>

<boot order='1'/>

<address type='drive' controller='0' bus='0' target='0' unit='2'/>

</disk>

<disk type='file' device='disk'>

<driver name='qemu' type='raw' cache='writeback' discard='unmap'/>

<source file='/mnt/user/domains/VM/vdisk2.img'/>

<target dev='hdd' bus='virtio'/>

<serial>vdisk2</serial>

<address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>

</disk>

<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='0x8'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>

</controller>

<controller type='pci' index='2' model='pcie-root-port'>

<model name='pcie-root-port'/>

<target chassis='2' port='0x9'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>

</controller>

<controller type='pci' index='3' model='pcie-root-port'>

<model name='pcie-root-port'/>

<target chassis='3' port='0xa'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x01' 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='0xb'/>

<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>

</controller>

<controller type='pci' index='7' model='pcie-to-pci-bridge'>

<model name='pcie-pci-bridge'/>

<address type='pci' domain='0x0000' bus='0x01' slot='0x00' 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>

<controller type='usb' index='0' model='qemu-xhci' ports='15'>

<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>

</controller>

<interface type='bridge'>

<mac address='52:54:00:3b:24:ca'/>

<source bridge='br0'/>

<model type='virtio-net'/>

<address type='pci' domain='0x0000' bus='0x03' 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='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='0x01' slot='0x00' function='0x0'/>

</source>

<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>

</hostdev>

<hostdev mode='subsystem' type='pci' managed='yes'>

<driver name='vfio'/>

<source>

<address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/>

</source>

<address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>

</hostdev>

<hostdev mode='subsystem' type='usb' managed='no'>

<source startupPolicy='optional'>

<vendor id='0x046d'/>

<product id='0xc542'/>

</source>

<address type='usb' bus='0' port='1'/>

</hostdev>

<hostdev mode='subsystem' type='usb' managed='no'>

<source startupPolicy='optional'>

<vendor id='0x1b1c'/>

<product id='0x1bc7'/>

</source>

<address type='usb' bus='0' port='2'/>

</hostdev>

<watchdog model='itco' action='reset'/>

<memballoon model='none'/>

</devices>

</domain>

These are the steps/info I have taken thus far:

• VT-d, Above 4g Decoding, enabled IGFX, set Initial Display Output to IGFX and I believe VT-x is enabled by default on my mobo? (GIGABYTE Z690 UD AX DDR4, i searched in BIOS but did not find anything closely related to VT-x)

• Confirmed both the GPU and Audio device are in their own IOMMU group and bound to vfio-pci with reboot

I fiddled with the bus/slots but to no avail, still getting internal error: Unknown PCI header type '127' for device '0000:01:00.0'. It seems most people get this error when trying to create a linux VM with GPU passthrough and Windows 10 GPU Passthough should be pretty self explanatory.

I am using a GeForce RTX 5060 GPU with Gigabyte Z690 UD AX DDR4 mobo and Intel Core i9-12900K CPU.

I will update the thread as we get progress!!! TYIA

SOLUTION!!!!

The GPU was failing to properly initialize and would fall asleep and not wake up again. ( noob terms )

This is the forum I followed and it worked!

Edited April 9Apr 9 by Outlaw29
left out info