Audio on GPU passthrough issues - Code 10

[markymark]

Hi everyone

I'm getting a code 10 with my Nvidia Audio (on the hdmi) on reboot of the VM. It is a GTX 1080ti Turbo. I've done a search and found a couple of similar articles with no real solution. I can't really move stuff around in the motherboard either so I'm kind of stuck with these iommu groups. I'm also very new to unraid. I've watched a LOT of videos, especially spaceinvaderone's which are awesome.

 

I've tried isolating the devices with no luck. I'm running with q35 as I had graphcial glithes with the i440fx (white horizontal lines on the screeen and not redrawing using the i440fx).

 

I've attach the syslinux config and the vm logs, the system devices and vm xml.

Any suggestions would be awesome.

 

Thanks in advance.

 

System Devices
IOMMU group 0:    [8086:3e30] 00:00.0 Host bridge: Intel Corporation 8th Gen Core 8-core Desktop Processor Host Bridge/DRAM Registers [Coffee Lake S] (rev 0d)
IOMMU group 1:    [8086:1901] 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 0d)
IOMMU group 2:    [8086:3e98] 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Desktop 9 Series) (rev 02)
IOMMU group 3:    [8086:a36d] 00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
[8086:a36f] 00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
IOMMU group 4:    [8086:a360] 00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
IOMMU group 5:    [8086:a340] 00:1b.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #17 (rev f0)
IOMMU group 6:    [8086:a338] 00:1c.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #1 (rev f0)
IOMMU group 7:    [8086:a33e] 00:1c.6 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #7 (rev f0)
IOMMU group 8:    [8086:a33f] 00:1c.7 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #8 (rev f0)
IOMMU group 9:    [8086:a330] 00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #9 (rev f0)
IOMMU group 10:    [8086:a305] 00:1f.0 ISA bridge: Intel Corporation Z390 Chipset LPC/eSPI Controller (rev 10)
[8086:a348] 00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
[8086:a323] 00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
[8086:a324] 00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
IOMMU group 11:    [10b5:8747] 01:00.0 PCI bridge: PLX Technology, Inc. PEX 8747 48-Lane, 5-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
IOMMU group 12:    [10b5:8747] 02:08.0 PCI bridge: PLX Technology, Inc. PEX 8747 48-Lane, 5-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
IOMMU group 13:    [10b5:8747] 02:09.0 PCI bridge: PLX Technology, Inc. PEX 8747 48-Lane, 5-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
IOMMU group 14:    [10b5:8747] 02:10.0 PCI bridge: PLX Technology, Inc. PEX 8747 48-Lane, 5-Port PCI Express Gen 3 (8.0 GT/s) Switch (rev ca)
IOMMU group 15:    [1000:0064] 05:00.0 Serial Attached SCSI controller: Broadcom / LSI SAS2116 PCI-Express Fusion-MPT SAS-2 [Meteor] (rev 02)
IOMMU group 16:    [1d6a:d107] 04:00.0 Ethernet controller: Aquantia Corp. AQC107 NBase-T/IEEE 802.3bz Ethernet Controller [AQtion] (rev 02)
IOMMU group 17:    [10de:1b06] 03:00.0 VGA compatible controller: NVIDIA Corporation GP102 [GeForce GTX 1080 Ti] (rev a1)
IOMMU group 18:    [10de:10ef] 03:00.1 Audio device: NVIDIA Corporation GP102 HDMI Audio Controller (rev a1)
IOMMU group 19:    [12d8:2304] 07:00.0 PCI bridge: Pericom Semiconductor PI7C9X2G304 EL/SL PCIe2 3-Port/4-Lane Packet Switch (rev 05)
IOMMU group 20:    [12d8:2304] 08:01.0 PCI bridge: Pericom Semiconductor PI7C9X2G304 EL/SL PCIe2 3-Port/4-Lane Packet Switch (rev 05)
IOMMU group 21:    [12d8:2304] 08:02.0 PCI bridge: Pericom Semiconductor PI7C9X2G304 EL/SL PCIe2 3-Port/4-Lane Packet Switch (rev 05)
IOMMU group 22:    [14f1:8880] 09:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)
IOMMU group 23:    [14f1:8880] 0a:00.0 Multimedia video controller: Conexant Systems, Inc. CX23887/8 PCIe Broadcast Audio and Video Decoder with 3D Comb (rev 04)
IOMMU group 24:    [1b21:1142] 0c:00.0 USB controller: ASMedia Technology Inc. ASM1042A USB 3.0 Host Controller

Syslinux Configuration
kernel /bzimage
append pcie_acs_override=downstream,multifunction vfio-pci-ids=14f1:8880,1b21:1142,8086:a305,8086:a348,8086:a323,8086:a324,10de:1b06,10de:10ef initrd=/bzroot modprobe.blacklist=i2c_i801,i2c_smbus

 

 

VM XML

<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm' id='2'>
  <name>Home-2 v2</name>
  <uuid>032b0290-0434-055f-7d06-170700080009</uuid>
  <metadata>
    <vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png" os="windows10"/>
  </metadata>
  <memory unit='KiB'>45088768</memory>
  <currentMemory unit='KiB'>45088768</currentMemory>
  <memoryBacking>
    <nosharepages/>
  </memoryBacking>
  <vcpu placement='static'>8</vcpu>
  <cputune>
    <vcpupin vcpu='0' cpuset='1'/>
    <vcpupin vcpu='1' cpuset='9'/>
    <vcpupin vcpu='2' cpuset='3'/>
    <vcpupin vcpu='3' cpuset='11'/>
    <vcpupin vcpu='4' cpuset='5'/>
    <vcpupin vcpu='5' cpuset='13'/>
    <vcpupin vcpu='6' cpuset='7'/>
    <vcpupin vcpu='7' cpuset='15'/>
  </cputune>
  <resource>
    <partition>/machine</partition>
  </resource>
  <os>
    <type arch='x86_64' machine='pc-q35-4.1'>hvm</type>
  </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'>
    <topology sockets='1' cores='4' threads='2'/>
  </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='cdrom'>
      <driver name='qemu' type='raw'/>
      <source file='/mnt/user/isos/virtio-win-0.1.160-1.iso'/>
      <backingStore/>
      <target dev='hdb' bus='sata'/>
      <readonly/>
      <alias name='sata0-0-1'/>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
      <source dev='/dev/disk/by-id/ata-SanDisk_SDSSDH32000G_19188F800825'/>
      <backingStore/>
      <target dev='hdc' bus='sata'/>
      <boot order='1'/>
      <alias name='sata0-0-2'/>
      <address type='drive' controller='0' bus='0' target='0' unit='2'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
      <source dev='/dev/disk/by-id/ata-ST4000DM004-2CV104_WFN1975M'/>
      <backingStore/>
      <target dev='hdd' bus='sata'/>
      <alias name='sata0-0-3'/>
      <address type='drive' controller='0' bus='0' target='0' unit='3'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='writeback'/>
      <source dev='/dev/disk/by-id/ata-ST31000528AS_9VP4H0V2'/>
      <backingStore/>
      <target dev='hde' bus='sata'/>
      <alias name='sata0-0-4'/>
      <address type='drive' controller='0' bus='0' target='0' unit='4'/>
    </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='0xb'/>
      <alias name='pci.4'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
    </controller>
    <controller type='pci' index='5' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='5' port='0xc'/>
      <alias name='pci.5'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x4'/>
    </controller>
    <controller type='pci' index='6' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='6' port='0xd'/>
      <alias name='pci.6'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x5'/>
    </controller>
    <controller type='pci' index='7' model='pcie-to-pci-bridge'>
      <model name='pcie-pci-bridge'/>
      <alias name='pci.7'/>
      <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
    </controller>
    <controller type='pci' index='8' model='pcie-root-port'>
      <model name='pcie-root-port'/>
      <target chassis='8' port='0xe'/>
      <alias name='pci.8'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x6'/>
    </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='qemu-xhci' ports='15'>
      <alias name='usb'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </controller>
    <interface type='bridge'>
      <mac address='52:54:00:8d:a4:44'/>
      <source bridge='br0'/>
      <target dev='vnet0'/>
      <model type='virtio'/>
      <alias name='net0'/>
      <address type='pci' domain='0x0000' bus='0x03' 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-2-Home-2 v2/org.qemu.guest_agent.0'/>
      <target type='virtio' name='org.qemu.guest_agent.0' state='disconnected'/>
      <alias name='channel0'/>
      <address type='virtio-serial' controller='0' bus='0' port='1'/>
    </channel>
    <input type='mouse' bus='ps2'>
      <alias name='input0'/>
    </input>
    <input type='keyboard' bus='ps2'>
      <alias name='input1'/>
    </input>
    <hostdev mode='subsystem' type='pci' managed='yes' xvga='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
      </source>
      <alias name='hostdev0'/>
      <rom file='/mnt/user/isos/gtx1080ti-turbo.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='0x03' slot='0x00' function='0x1'/>
      </source>
      <alias name='hostdev1'/>
      <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='0x00' slot='0x1f' function='0x3'/>
      </source>
      <alias name='hostdev2'/>
      <address type='pci' domain='0x0000' bus='0x07' slot='0x01' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x09' slot='0x00' function='0x0'/>
      </source>
      <alias name='hostdev3'/>
      <address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <driver name='vfio'/>
      <source>
        <address domain='0x0000' bus='0x0a' slot='0x00' function='0x0'/>
      </source>
      <alias name='hostdev4'/>
      <address type='pci' domain='0x0000' bus='0x08' slot='0x00' function='0x0'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x046d'/>
        <product id='0xc246'/>
        <address bus='1' device='2'/>
      </source>
      <alias name='hostdev5'/>
      <address type='usb' bus='0' port='1'/>
    </hostdev>
    <hostdev mode='subsystem' type='usb' managed='no'>
      <source>
        <vendor id='0x046d'/>
        <product id='0xc336'/>
        <address bus='1' device='3'/>
      </source>
      <alias name='hostdev6'/>
      <address type='usb' bus='0' port='2'/>
    </hostdev>
    <memballoon model='none'/>
  </devices>
  <seclabel type='dynamic' model='dac' relabel='yes'>
    <label>+0:+100</label>
    <imagelabel>+0:+100</imagelabel>
  </seclabel>
</domain>

VM Logs
-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=0xb,chassis=4,id=pci.4,bus=pcie.0,addr=0x1.0x3 \
-device pcie-root-port,port=0xc,chassis=5,id=pci.5,bus=pcie.0,addr=0x1.0x4 \
-device pcie-root-port,port=0xd,chassis=6,id=pci.6,bus=pcie.0,addr=0x1.0x5 \
-device pcie-pci-bridge,id=pci.7,bus=pci.1,addr=0x0 \
-device pcie-root-port,port=0xe,chassis=8,id=pci.8,bus=pcie.0,addr=0x1.0x6 \
-device qemu-xhci,p2=15,p3=15,id=usb,bus=pcie.0,addr=0x7 \
-device virtio-serial-pci,id=virtio-serial0,bus=pci.2,addr=0x0 \
-drive file=/mnt/user/isos/virtio-win-0.1.160-1.iso,format=raw,if=none,id=drive-sata0-0-1,readonly=on \
-device ide-cd,bus=ide.1,drive=drive-sata0-0-1,id=sata0-0-1 \
-drive file=/dev/disk/by-id/ata-SanDisk_SDSSDH32000G_19188F800825,format=raw,if=none,id=drive-sata0-0-2,cache=writeback \
-device ide-hd,bus=ide.2,drive=drive-sata0-0-2,id=sata0-0-2,bootindex=1,write-cache=on \
-drive file=/dev/disk/by-id/ata-ST4000DM004-2CV104_WFN1975M,format=raw,if=none,id=drive-sata0-0-3,cache=writeback \
-device ide-hd,bus=ide.3,drive=drive-sata0-0-3,id=sata0-0-3,write-cache=on \
-drive file=/dev/disk/by-id/ata-ST31000528AS_9VP4H0V2,format=raw,if=none,id=drive-sata0-0-4,cache=writeback \
-device ide-hd,bus=ide.4,drive=drive-sata0-0-4,id=sata0-0-4,write-cache=on \
-netdev tap,fd=36,id=hostnet0,vhost=on,vhostfd=37 \
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:8d:a4:44,bus=pci.3,addr=0x0 \
-chardev pty,id=charserial0 \
-device isa-serial,chardev=charserial0,id=serial0 \
-chardev socket,id=charchannel0,fd=38,server,nowait \
-device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \
-device vfio-pci,host=0000:03:00.0,id=hostdev0,x-vga=on,bus=pci.4,addr=0x0,romfile=/mnt/user/isos/gtx1080ti-turbo.rom \
-device vfio-pci,host=0000:03:00.1,id=hostdev1,bus=pci.5,addr=0x0 \
-device vfio-pci,host=0000:00:1f.3,id=hostdev2,bus=pci.7,addr=0x1 \
-device vfio-pci,host=0000:09:00.0,id=hostdev3,bus=pci.6,addr=0x0 \
-device vfio-pci,host=0000:0a:00.0,id=hostdev4,bus=pci.8,addr=0x0 \
-device usb-host,hostbus=1,hostaddr=2,id=hostdev5,bus=usb.0,port=1 \
-device usb-host,hostbus=1,hostaddr=3,id=hostdev6,bus=usb.0,port=2 \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2020-01-06 07:19:26.709+0000: Domain id=2 is tainted: high-privileges
2020-01-06 07:19:26.709+0000: Domain id=2 is tainted: host-cpu
char device redirected to /dev/pts/0 (label charserial0)
2020-01-06T07:19:32.285219Z qemu-system-x86_64: vfio: Cannot reset device 0000:00:1f.3, no available reset mechanism.
2020-01-06T07:19:35.408215Z qemu-system-x86_64: vfio: Cannot reset device 0000:00:1f.3, no available reset mechanism.

 

 

Thanks

tower-diagnostics-20200106-1547.zip

[bastl]

3 hours ago, markymark said:

2020-01-06T07:19:35.408215Z qemu-system-x86_64: vfio: Cannot reset device 0000:00:1f.3, no available reset mechanism.

This is a warning of your passed through onboard audio device.

3 hours ago, markymark said:

[8086:a348] 00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)

If it isn't able to reset, you won't be able to restart the VM without restarting the whole server. The device will end up in an unrecoverable state and might cause errors in the VM or other devices depending on it. Minimize the passthrough to a minimum of devices, GPU+GPU-Audio only and check how it behaves.

 

Also worth to mention, the device isn't in it's own separated group and you are not passing them all to the VM. I guess, passing the chipset controller to the VM will break other things.

3 hours ago, markymark said:

IOMMU group 10:    [8086:a305] 00:1f.0 ISA bridge: Intel Corporation Z390 Chipset LPC/eSPI Controller (rev 10)
[8086:a348] 00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
[8086:a323] 00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
[8086:a324] 00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)

 

[markymark]

Thanks for the response

 

Yeah that's exactly whats been happening. A reboot of the unraid server allowed the vm to start with no errors but on vm restart the errors occured as per other threads on the code 10 issue and the last two lines of the VM logs above.

 

For some reason I thought it was the gpu audio in error state (but i think i had been looking at it too long and I was also having issues booting the vm at all if I did not have a monitor plugged into the onboard gpu (took me a while to work that one out unfortunately).

 

I only enabled the onboard audio as I sometimes want the audio when the monitor is off and without an hdmi audio extractor the only way to do this was the onboard audio. Before I enabled the onboard audio I did not notice an errors so I have already done the limited pass through. 

 

Do you think I should pass through all the other items in that group? I wasn't sure what they all did.?

 

I had no idea what I was getting into with this passthrough stuff when I started my unraid journey

 

Cheers

[bastl]

@markymark In general you're kinda safe if each device you wanna passthrough is in it's own group. If it's not you will will end up with all kind of weird errors and bugs. In your case, if you passthrough the chipset controller i predict you will break all devices connected to the chipset. Almost always usb controllers, sata controllers and network devices are connected to it. Imagine what will happen if you remove the middle man handling drives, network and your usb devices from unraid? You can try it, sure, but i guess you will have more problems this way than buying a cheap soundcard. For 10-15€ you already get simple USB-sound cards you can passthrough.

 

You already using the ACS override patch to split the devices even further as it is meanted to be by the board manufacturer. It's already the kinda last workaround to split the IOMMU groups and also has it's downsides. A couple people reported on some specific setups and devices with ACS they get errors and have issues.

[markymark]

Yeah before I did the ACS overide the groups were in totally shocking massive groups. I really don't want any data errors so I think the hdmi audio extractor might be money well spent. What's a bit more $$ when i've spent this much on what I thought was going to be a great motherboard and is a iommu board from hell haha.. 

 

I know this is another topic but I've also great difficulty passing through a usb3.1 controller which this board must group all together. If I plug in a usb flash drive is it supposed to show up? I've managed to get it to add as a hard drive nut doesn't show up in disk management in Windows 10? Is this a limitation or am I just doing something wrong.

 

 

[bastl]

4 hours ago, markymark said:

IOMMU group 3:    [8086:a36d] 00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
[8086:a36f] 00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)

If you try to passthrough this onboard USB 3.1 controller, you might have similar issues. As you can see, there is another device grouped with the controller. If the VM detects it correctly and you plug in a usb flash drive, it should show it as you know it from windows. The controller itself should show up in your system devices as a controller, not as a drive.

 

[markymark]

Yeah I saw that one there but the SRAM bit scared me off of touching it   I might give it a try, worst that can happen is it it won't boot

 

I originally tried passing through the asmedia one in the last group as it appeared to be by itself but I might have done it wrong or ran into some other problem, I can't remember now.

 

Thanks for the suggestions.

[bastl]

@markymark I can tell you, why you choose the "Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller" one over "ASM1042A USB 3.0 Host Controller"

 

3.1 > 3.0 😂

[markymark]

Good point