[6.9.2] GPU Passthrough VM


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Hello,

 

I've been lurking the forums lately viewing each thread relating to gpu passthrough and couldn't find a solution that works.

 

I've followed this tutorial 

by SpaceInvader and still having problems.

 

My windows 11 vm runs great through VNC but once I add my Nvidia card, I get a black screen (I've attached a picture of it)

 

What I've already tried:

Having two separate groups for the video card and audio controller

Enabled PCIe ACS override & VFIO allow unsafe interrupts

Reinstalled Windows 11 and installed all the drivers then trying to add the video card

I've tried two different VGA bios' and both displayed a black screen. (I've also tried pulling my own vga bios through spaceinvaders newer tutorial but it's not working for me) I attached a picture of the black screen

 

I don't know what other information is needed for support but please let me know if ya'll need any other information. I'm sorry if the post is too long but I tried to attach as much relevant information.

 

<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm' id='6'>
  <name>Windows 10</name>
  <uuid>0e802c21-c1d6-01f8-476a-6e5b0ade0158</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png" os="windows10"/>
  </metadata>
  <memory unit='KiB'>16777216</memory>
  <currentMemory unit='KiB'>16777216</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>4</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='0'/>
    <vcpupin vcpu='1' cpuset='2'/>
    <vcpupin vcpu='2' cpuset='4'/>
    <vcpupin vcpu='3' cpuset='6'/>
  </cputune>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-q35-5.1'>hvm</type>
    <loader readonly='yes' type='pflash'>/usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
    <nvram>/etc/libvirt/qemu/nvram/0e802c21-c1d6-01f8-476a-6e5b0ade0158_VARS-pure-efi.fd</nvram>
  </os>
  <features>
    <acpi/>
    <apic/>
    <hyperv>
      <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 10/vdisk1.img' index='3'/>
      <backingStore/>
      <target dev='hdc' bus='virtio'/>
      <boot order='1'/>
      <alias name='virtio-disk2'/>
      <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/Windows/Window11_Insiders.iso' index='2'/>
      <backingStore/>
      <target dev='hda' bus='sata'/>
      <readonly/>
      <boot order='2'/>
      <alias name='sata0-0-0'/>
      <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-0.1.190-1.iso' index='1'/>
      <backingStore/>
      <target dev='hdb' bus='sata'/>
      <readonly/>
      <alias name='sata0-0-1'/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <controller type='pci' index='0' model='pcie-root'>
      <alias name='pcie.0'/>
    </controller>
    <controller type='pci' index='1' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='1' port='0x8'/>
      <alias name='pci.1'/>
      <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'/>
      <alias name='pci.2'/>
      <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'/>
      <alias name='pci.3'/>
      <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'/>
      <alias name='pci.4'/>
      <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'/>
      <alias name='pci.5'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x4'/>
    </controller>
    <controller type='virtio-serial' index='0'>
      <alias name='virtio-serial0'/>
      <address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
    </controller>
    <controller type='sata' index='0'>
      <alias name='ide'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
    </controller>
    <controller type='usb' index='0' model='ich9-ehci1'>
      <alias name='usb'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x7'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci1'>
      <alias name='usb'/>
      <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'>
      <alias name='usb'/>
      <master startport='2'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x1'/>
    </controller>
    <controller type='usb' index='0' model='ich9-uhci3'>
      <alias name='usb'/>
      <master startport='4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x2'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:cb:61:9e'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio-net'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/0'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
      <alias name='serial0'/>
    </serial>
    <console type='pty' tty='/dev/pts/0'>
      <source path='/dev/pts/0'/>
      <target type='serial' port='0'/>
      <alias name='serial0'/>
    </console>
    <channel type='unix'>
      <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/domain-6-Windows 10/org.qemu.guest_agent.0'/>
      <target type='virtio' name='org.qemu.guest_agent.0' state='connected'/>
      <alias name='channel0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='tablet' bus='usb'>
      <alias name='input0'/>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'>
      <alias name='input1'/>
    </input>
    <input type='keyboard' bus='ps2'>
      <alias name='input2'/>
    </input>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x81' slot='0x00' function='0x0'/>
      </source>
      <alias name='hostdev0'/>
      <rom file='/mnt/user/isos/vbios/gtx1070.rom'/>
      <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='0x81' slot='0x00' function='0x1'/>
      </source>
      <alias name='hostdev1'/>
      <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
    </hostdev>
    <memballoon model='none'/>
  </devices>
  <seclabel type='dynamic' model='dac' relabel='yes'>
    <label>+0:+100</label>
    <imagelabel>+0:+100</imagelabel>
  </seclabel>
</domain>

 Attached above is my VM XML. Below is my IOMMU grouping for the nvidia as well, as you can see they are in the same group.

IOMMU group 72:			 	[10de:1b81] 81:00.0 VGA compatible controller: NVIDIA Corporation GP104 [GeForce GTX 1070] (rev a1)
 	[10de:10f0] 81:00.1 Audio device: NVIDIA Corporation GP104 High Definition Audio Controller (rev a1)

 

-nodefaults \
-chardev socket,id=charmonitor,fd=31,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=localtime \
-no-hpet \
-no-shutdown \
-boot strict=on \
-device pcie-root-port,port=0x8,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1 \
-device pcie-root-port,port=0x9,chassis=2,id=pci.2,bus=pcie.0,addr=0x1.0x1 \
-device pcie-root-port,port=0xa,chassis=3,id=pci.3,bus=pcie.0,addr=0x1.0x2 \
-device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 \
-device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 \
-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x7.0x7 \
-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x7 \
-device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x7.0x1 \
-device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x7.0x2 \
-device virtio-serial-pci,id=virtio-serial0,bus=pci.2,addr=0x0 \
-blockdev '{"driver":"file","filename":"/mnt/user/domains/Windows 10/vdisk1.img","node-name":"libvirt-3-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-3-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"qcow2","file":"libvirt-3-storage","backing":null}' \
-device virtio-blk-pci,bus=pci.3,addr=0x0,drive=libvirt-3-format,id=virtio-disk2,bootindex=1,write-cache=on \
-blockdev '{"driver":"file","filename":"/mnt/user/isos/Windows/Window11_Insiders.iso","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":true,"driver":"raw","file":"libvirt-2-storage"}' \
-device ide-cd,bus=ide.0,drive=libvirt-2-format,id=sata0-0-0,bootindex=2 \
-blockdev '{"driver":"file","filename":"/mnt/user/isos/virtio-win-0.1.190-1.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 ide-cd,bus=ide.1,drive=libvirt-1-format,id=sata0-0-1 \
-netdev tap,fd=33,id=hostnet0 \
-device virtio-net,netdev=hostnet0,id=net0,mac=52:54:00:cb:61:9e,bus=pci.1,addr=0x0 \
-chardev pty,id=charserial0 \
-device isa-serial,chardev=charserial0,id=serial0 \
-chardev socket,id=charchannel0,fd=35,server,nowait \
-device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \
-device usb-tablet,id=input0,bus=usb.0,port=1 \
-device vfio-pci,host=0000:81:00.0,id=hostdev0,bus=pci.4,addr=0x0,romfile=/mnt/user/isos/vbios/gtx1070.rom \
-device vfio-pci,host=0000:81:00.1,id=hostdev1,bus=pci.5,addr=0x0 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2021-10-25 21:02:28.517+0000: Domain id=6 is tainted: high-privileges
2021-10-25 21:02:28.517+0000: Domain id=6 is tainted: host-cpu
char device redirected to /dev/pts/0 (label charserial0)

 

snip.PNG

Link to comment
5 minutes ago, Michaelclaw said:

here is the diagnostic file

Can you please try to:

1. attach to vfio iommu group 72

2. in the xml of the vm replace this:

    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x81' slot='0x00' function='0x0'/>
      </source>
      <rom file='/mnt/user/isos/vbios/gtx1070z2.rom'/>
      <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='0x81' slot='0x00' function='0x1'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
    </hostdev>

 

With this:

    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x81' slot='0x00' function='0x0'/>
      </source>
      <rom file='/mnt/user/isos/vbios/gtx1070z2.rom'/>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0' multifunction='on'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x81' slot='0x00' function='0x1'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x1'/>
    </hostdev>

 

3. make sure /mnt/user/isos/vbios/gtx1070z2.rom is your own bios and not a downloaded one

4. reboot unraid and start the vm

Link to comment

I’m sorry I don’t know what you’re asking for in the first question? If you’re asking for the Iommu group for 72, I have it pasted in the first post. If not, could you please clarify? I’m new to unraid and mostly just use it for docker.

 

i will replace that text when I get off work today.

 

Unfortunately I can’t pull my own vbios, the script that SpaceInvader created doesn’t work for me (Unraid doesn’t register when I press the power button to wake up from sleep mode)

Will I be able to run with vbios from techpowerup or do I have to have a dump from my card? I checked the model number sticker on my card and it’s the MSI gtx 1070 gaming z, so I did pull the correct one.

 

thank you for the help so far

Link to comment
1 minute ago, Michaelclaw said:

If not, could you please clarify?

System Devices > PCI Devices and IOMMU Groups

Put a check for iommu group 72.

 

3 minutes ago, Michaelclaw said:

I checked the model number sticker on my card and it’s the MSI gtx 1070 gaming z

Sometimes even revision number may cause issues, so it's better to dump it.

You can't dump it most probably because the gpu is attached and in use by the host.

Try to dump it again after attaching to vfio (bullet point 1+restart): you need an additional primary gpu or access unraid from another device since the gpu will be attached to vfio and cannot be used by unraid.

Link to comment
54 minutes ago, ghost82 said:

System Devices > PCI Devices and IOMMU Groups

Put a check for iommu group 72.

 

Sometimes even revision number may cause issues, so it's better to dump it.

You can't dump it most probably because the gpu is attached and in use by the host.

Try to dump it again after attaching to vfio (bullet point 1+restart): you need an additional primary gpu or access unraid from another device since the gpu will be attached to vfio and cannot be used by unraid.

Okay i so follow your instructions and tried to re-dump my vgabios and had the same problem where the dumps are only like 60kb instead of the techpower's 160kb ones.

Waiting for a few seconds .....

Stopping the temp vm
Domain dumpvbios destroyed

Removing the temp vm
Domain dumpvbios has been undefined



Okay dumping vbios file named GeForce GTX 1070 to the location /mnt/user/isos/vbios/
/mnt/user/isos/vbios/GeForce GTX 1070 is less than 70kb
This seems too small. Probably the GPU is Primary and needs disconnecting and reconnecting to get proper vbios

Running again
Disconnecting the graphics card
1
Entered suspended (sleep) state ......

PRESS POWER BUTTON ON SERVER TO CONTINUE

 

 I don't know if its a problem but when it gets to this part in the script, when I press the power button it doesn't continue the script for like a minute. I feel like it's not detecting me pressing the power button. It still dumps the bios though but I think it's not complete.

 

So after doing the checkmark on the Nvidia card & audio iommu group, updating the xml file, and using the 60kb bios dump from my card I still get a black screen. 

1 hour ago, ghost82 said:

you need an additional primary gpu or access unraid from another device since the gpu will be attached to vfio and cannot be used by unraid.

In regard to this, I'm accessing unraid through port 75 on my main desktop and still had I believe an incomplete dump

 

Please let me know if you have any other ideas

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