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Need help on setting up GPU passthrough on Windows VM


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First time trying GPU passthrough here. My VM runs normally when I used the virtual graphics card. When switching to GPU passthrough, there is no screen displayed. Here is my VM config and VM log for reference. Since I am very new to configuring VM, I would kindly appreciate more detailed advices on debugging.

 

EDIT: Also saw this in the system log. Not sure if it is something I should pay attention to.

vfio-pci 0000:01:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0x9de3

 

<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm'>
  <name>Windows 11</name>
  <uuid>31eef2c0-ac6d-9f26-fb25-2526b1fbaed3</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows 10" icon="default.png" os="windows10"/>
  </metadata>
  <memory unit='KiB'>8388608</memory>
  <currentMemory unit='KiB'>8388608</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>4</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='4'/>
    <vcpupin vcpu='1' cpuset='5'/>
    <vcpupin vcpu='2' cpuset='6'/>
    <vcpupin vcpu='3' cpuset='7'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-q35-7.2'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi-tpm.fd</loader>
    <nvram>/etc/libvirt/qemu/nvram/31eef2c0-ac6d-9f26-fb25-2526b1fbaed3_VARS-pure-efi-tpm.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='2' threads='2'/>
    <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='qcow2' cache='writeback'/>
      <source file='/mnt/user/domains/Windows 11/vdisk1.img'/>
      <target dev='hdc' bus='virtio'/>
      <boot order='1'/>
      <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
    </disk>
    <disk type='file' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/isos/virtio-win-0.1.262-2.iso'/>
      <target dev='hdb' bus='sata'/>
      <readonly/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </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='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='ich9-ehci1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <master startport='0'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0' multifunction='on'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci2'>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x2'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:73:d2:1b'/>
      <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'/>
    <tpm model='tpm-tis'>
      <backend type='emulator' version='2.0' persistent_state='yes'/>
    </tpm>
    <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='0x04' 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='0x05' slot='0x00' function='0x0'/>
    </hostdev>
    <memballoon model='none'/>
  </devices>
</domain>
text  error  warn  system  array  login  

-blockdev '{"driver":"file","filename":"/mnt/user/domains/Windows 11/vdisk1.img","node-name":"libvirt-2-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"qcow2","file":"libvirt-2-storage","backing":null}' \
-device '{"driver":"virtio-blk-pci","bus":"pci.3","addr":"0x0","drive":"libvirt-2-format","id":"virtio-disk2","bootindex":1,"write-cache":"on"}' \
-blockdev '{"driver":"file","filename":"/mnt/user/isos/virtio-win-0.1.262-2.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \
-device '{"driver":"ide-cd","bus":"ide.1","drive":"libvirt-1-format","id":"sata0-0-1"}' \
-netdev tap,fd=36,id=hostnet0 \
-device '{"driver":"virtio-net","netdev":"hostnet0","id":"net0","mac":"52:54:00:73:d2:1b","bus":"pci.1","addr":"0x0"}' \
-chardev pty,id=charserial0 \
-device '{"driver":"isa-serial","chardev":"charserial0","id":"serial0","index":0}' \
-chardev socket,id=charchannel0,fd=34,server=on,wait=off \
-device '{"driver":"virtserialport","bus":"virtio-serial0.0","nr":1,"chardev":"charchannel0","id":"channel0","name":"org.qemu.guest_agent.0"}' \
-chardev 'socket,id=chrtpm,path=/run/libvirt/qemu/swtpm/4-Windows 11-swtpm.sock' \
-tpmdev emulator,id=tpm-tpm0,chardev=chrtpm \
-device '{"driver":"tpm-tis","tpmdev":"tpm-tpm0","id":"tpm0"}' \
-device '{"driver":"usb-tablet","id":"input0","bus":"usb.0","port":"1"}' \
-audiodev '{"id":"audio1","driver":"none"}' \
-device '{"driver":"vfio-pci","host":"0000:01:00.0","id":"hostdev0","bus":"pci.4","addr":"0x0"}' \
-device '{"driver":"vfio-pci","host":"0000:01:00.1","id":"hostdev1","bus":"pci.5","addr":"0x0"}' \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
char device redirected to /dev/pts/0 (label charserial0)
2024-08-19T00:50:16.722796Z qemu-system-x86_64: terminating on signal 15 from pid 10233 (/usr/sbin/libvirtd)
2024-08-19 00:50:18.324+0000: shutting down, reason=destroyed
2024-08-19 00:57:27.762+0000: Starting external device: TPM Emulator
/usr/bin/swtpm socket --ctrl 'type=unixio,path=/run/libvirt/qemu/swtpm/5-Windows 11-swtpm.sock,mode=0600' --tpmstate dir=/var/lib/libvirt/swtpm/31eef2c0-ac6d-9f26-fb25-2526b1fbaed3/tpm2,mode=0600 --log 'file=/var/log/swtpm/libvirt/qemu/Windows 11-swtpm.log' --terminate --tpm2
2024-08-19 00:57:27.790+0000: starting up libvirt version: 8.7.0, qemu version: 7.2.0, kernel: 6.1.99-Unraid, hostname: KK
LC_ALL=C \
PATH=/bin:/sbin:/usr/bin:/usr/sbin \
HOME='/var/lib/libvirt/qemu/domain-5-Windows 11' \
XDG_DATA_HOME='/var/lib/libvirt/qemu/domain-5-Windows 11/.local/share' \
XDG_CACHE_HOME='/var/lib/libvirt/qemu/domain-5-Windows 11/.cache' \
XDG_CONFIG_HOME='/var/lib/libvirt/qemu/domain-5-Windows 11/.config' \
/usr/local/sbin/qemu \
-name 'guest=Windows 11,debug-threads=on' \
-S \
-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-5-Windows 11/master-key.aes"}' \
-blockdev '{"driver":"file","filename":"/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi-tpm.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}' \
-blockdev '{"driver":"file","filename":"/etc/libvirt/qemu/nvram/31eef2c0-ac6d-9f26-fb25-2526b1fbaed3_VARS-pure-efi-tpm.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}' \
-machine pc-q35-7.2,usb=off,dump-guest-core=off,mem-merge=off,memory-backend=pc.ram,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format \
-accel kvm \
-cpu host,migratable=on,hv-time=on,hv-relaxed=on,hv-vapic=on,hv-spinlocks=0x1fff,hv-vendor-id=none,host-cache-info=on,l3-cache=off \
-m 8192 \
-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":8589934592}' \
-overcommit mem-lock=off \
-smp 4,sockets=1,dies=1,cores=2,threads=2 \
-uuid 31eef2c0-ac6d-9f26-fb25-2526b1fbaed3 \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=35,server=on,wait=off \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=localtime \
-no-hpet \
-no-shutdown \
-boot strict=on \
-device '{"driver":"pcie-root-port","port":8,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x1"}' \
-device '{"driver":"pcie-root-port","port":9,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x1.0x1"}' \
-device '{"driver":"pcie-root-port","port":10,"chassis":3,"id":"pci.3","bus":"pcie.0","addr":"0x1.0x2"}' \
-device '{"driver":"pcie-root-port","port":19,"chassis":4,"id":"pci.4","bus":"pcie.0","addr":"0x2.0x3"}' \
-device '{"driver":"pcie-root-port","port":20,"chassis":5,"id":"pci.5","bus":"pcie.0","addr":"0x2.0x4"}' \
-device '{"driver":"ich9-usb-ehci1","id":"usb","bus":"pcie.0","addr":"0x7.0x7"}' \
-device '{"driver":"ich9-usb-uhci1","masterbus":"usb.0","firstport":0,"bus":"pcie.0","multifunction":true,"addr":"0x7"}' \
-device '{"driver":"ich9-usb-uhci2","masterbus":"usb.0","firstport":2,"bus":"pcie.0","addr":"0x7.0x1"}' \
-device '{"driver":"ich9-usb-uhci3","masterbus":"usb.0","firstport":4,"bus":"pcie.0","addr":"0x7.0x2"}' \
-device '{"driver":"virtio-serial-pci","id":"virtio-serial0","bus":"pci.2","addr":"0x0"}' \
-blockdev '{"driver":"file","filename":"/mnt/user/domains/Windows 11/vdisk1.img","node-name":"libvirt-2-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"qcow2","file":"libvirt-2-storage","backing":null}' \
-device '{"driver":"virtio-blk-pci","bus":"pci.3","addr":"0x0","drive":"libvirt-2-format","id":"virtio-disk2","bootindex":1,"write-cache":"on"}' \
-blockdev '{"driver":"file","filename":"/mnt/user/isos/virtio-win-0.1.262-2.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \
-device '{"driver":"ide-cd","bus":"ide.1","drive":"libvirt-1-format","id":"sata0-0-1"}' \
-netdev tap,fd=36,id=hostnet0 \
-device '{"driver":"virtio-net","netdev":"hostnet0","id":"net0","mac":"52:54:00:73:d2:1b","bus":"pci.1","addr":"0x0"}' \
-chardev pty,id=charserial0 \
-device '{"driver":"isa-serial","chardev":"charserial0","id":"serial0","index":0}' \
-chardev socket,id=charchannel0,fd=34,server=on,wait=off \
-device '{"driver":"virtserialport","bus":"virtio-serial0.0","nr":1,"chardev":"charchannel0","id":"channel0","name":"org.qemu.guest_agent.0"}' \
-chardev 'socket,id=chrtpm,path=/run/libvirt/qemu/swtpm/5-Windows 11-swtpm.sock' \
-tpmdev emulator,id=tpm-tpm0,chardev=chrtpm \
-device '{"driver":"tpm-tis","tpmdev":"tpm-tpm0","id":"tpm0"}' \
-device '{"driver":"usb-tablet","id":"input0","bus":"usb.0","port":"1"}' \
-audiodev '{"id":"audio1","driver":"none"}' \
-device '{"driver":"vfio-pci","host":"0000:01:00.0","id":"hostdev0","bus":"pci.4","addr":"0x0"}' \
-device '{"driver":"vfio-pci","host":"0000:01:00.1","id":"hostdev1","bus":"pci.5","addr":"0x0"}' \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
char device redirected to /dev/pts/0 (label charserial0)

 

Edited by kencwt
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