Code 10 Error On XP VM With Passthrough of R7 240 Card

[NorthmidwestieUSA]

First time I've ever posted  on a forum so let me know if this needs to go somewhere else.  Unraid features work great and all my other VMs work flawlessly.  I have one VM though which is Windows XP that has given me some issue.  I am able to pass through my graphics without a problem but in the device manager it throws a "Code 10 Device Cannot Start" error for the driver.  I have installed XP under both x440i and Q35 with the same result and both with and without vbios dumped from the card - both ways I am able to get a picture but still a Code 10.  Also if I turn multifunction on in the xml for the card I will no longer get a picture.  The card is a Powercolor R7 240 2GB.  Manual install of the XP driver still gives a Code 10 and Catalyst installer gives an "unknown" and device id of "0xaab0".  Any thoughts?  XML is as follows:

 

<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
  <name>Windows XP</name>
  <uuid>bb7b0446-4aae-eb91-8ef6-59bab37f6ae3</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows XP" icon="windowsxp.png" os="windowsxp" webui="" storage="default"/>
  </metadata>
  <memory unit='KiB'>1048576</memory>
  <currentMemory unit='KiB'>1048576</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>2</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='4'/>
    <vcpupin vcpu='1' cpuset='12'/>
  </cputune>
  <os>
    <type arch='x86_64' machine='pc-i440fx-9.0'>hvm</type>
  </os>
  <features>
    <acpi/>
    <apic/>
  </features>
  <cpu mode='host-passthrough' check='none' migratable='on'>
    <topology sockets='1' dies='1' clusters='1' cores='1' threads='2'/>
    <cache mode='passthrough'/>
    <feature policy='require' name='topoext'/>
  </cpu>
  <clock offset='localtime'>
    <timer name='hpet' present='no'/>
    <timer name='hypervclock' present='yes'/>
  </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/vl en_windows_xp_professional_with_service_pack_3_x86_cd_vl_x14-73974.iso'/>
      <target dev='hda' bus='ide'/>
      <readonly/>
      <boot order='1'/>
      <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-0.1.262-2.iso'/>
      <target dev='hdb' bus='ide'/>
      <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'/>
      <source file='/mnt/vmpool/Windows XP/vdisk1.img'/>
      <target dev='hdc' bus='ide' rotation_rate='1'/>
      <serial>vdisk1</serial>
      <boot order='2'/>
      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
    </disk>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </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='52:54:00:2e:ad:a9'/>
      <source bridge='br0'/>
      <model type='virtio-net'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' 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='0x10' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x10' slot='0x00' function='0x1'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x26' slot='0x00' function='0x0'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x046d'/>
        <product id='0xc534'/>
      </source>
      <address type='usb' bus='0' port='1'/>
    </hostdev>
    <memballoon model='none'/>
  </devices>
  <qemu:override>
    <qemu:device alias='hostdev0'>
      <qemu:frontend>
        <qemu:property name='x-vga' type='bool' value='true'/>
      </qemu:frontend>
    </qemu:device>
  </qemu:override>
</domain>

Edited September 9, 2024 by NorthmidwestieUSA

[NorthmidwestieUSA]

Did a little more research and evidently the R7 240 can be difficult to pass through on an XP VM.  Bought a Radeon HD 5450 card and added that to my server as well (had one more x16 slot open) and solved the issue.  All, drivers and legacy gaming/apps are working fine now on this VM.