<div dir="ltr">Hi all,<br><br>I've successfully passed through my GTX 970 and its audio device (see below).<br><span style="font-family:monospace"><span style="color:rgb(0,0,0)"><br> <font size="1">02:00.0 VGA compatible controller: NVIDIA Corporation GM204 [GeForce GTX </font></span></span><font size="1"><span style="font-family:monospace;color:rgb(0,0,0)">970] (rev a1) (prog-if 00 [VGA controller])
</span><br><font face="monospace"> Kernel driver in use: vfio-pci</font><br><br><font face="monospace">02:00.1 Audio device: NVIDIA Corporation GM204 High Definition Audio Controller (rev a1)
</font><br><font face="monospace"> Kernel driver in use: vfio-pci</font><br></font><br><font face="arial, helvetica, sans-serif">Unfortunately, there's a <b>severe audio stutter</b> that takes place. I'm not sure what could be the cause. Has anyone else experienced this? I'm using kernel </font><span style="font-family:monospace;color:rgb(0,0,0)"><b>4.5.1-1-ARCH</b><br></span><br><b><font face="arial, helvetica, sans-serif">Here's my VM setup:</font></b><br><br><span style="font-family:monospace"><span style="color:rgb(0,0,0)"><domain type='kvm'>
</span><br> <name>win10</name>
<br> <uuid>f8ba8223-023d-4ba7-a7a5-81c36b3aeb3e</uuid>
<br> <memory unit='KiB'>8388608</memory>
<br> <currentMemory unit='KiB'>8388608</currentMemory>
<br> <vcpu placement='static'>6</vcpu>
<br> <cputune>
<br> <vcpupin vcpu='0' cpuset='3'/>
<br> <vcpupin vcpu='1' cpuset='4'/>
<br> <vcpupin vcpu='2' cpuset='5'/>
<br> <vcpupin vcpu='3' cpuset='9'/>
<br> <vcpupin vcpu='4' cpuset='10'/>
<br> <vcpupin vcpu='5' cpuset='11'/>
<br> </cputune>
<br> <os>
<br> <type arch='x86_64' machine='pc-i440fx-2.5'>hvm</type>
<br> <loader readonly='yes' type='pflash'>/usr/share/edk2.git/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
<br> <nvram>/var/lib/libvirt/qemu/nvram/win10_VARS.fd</nvram>
<br> <boot dev='hd'/>
<br> </os>
<br> <features>
<br> <acpi/>
<br> <apic/>
<br> <kvm>
<br> <hidden state='on'/>
<br> </kvm>
<br> <vmport state='off'/>
<br> </features>
<br> <cpu mode='host-passthrough'>
<br> <topology sockets='1' cores='3' threads='2'/>
<br> </cpu>
<br> <clock offset='localtime'>
<br> <timer name='rtc' tickpolicy='catchup'/>
<br> <timer name='pit' tickpolicy='delay'/>
<br> <timer name='hpet' present='no'/>
<br> </clock>
<br> <on_poweroff>destroy</on_poweroff>
<br> <on_reboot>restart</on_reboot>
<br> <on_crash>restart</on_crash>
<br> <pm>
<br> <suspend-to-mem enabled='no'/>
<br> <suspend-to-disk enabled='no'/>
<br> </pm></span><span style="font-family:monospace"><span style="color:rgb(0,0,0)"> <devices>
</span><br> <emulator>/usr/sbin/qemu-system-x86_64</emulator>
<br> <disk type='file' device='disk'>
<br> <driver name='qemu' type='raw'/>
<br> <source file='/home/kindred/.virtualmachines/win10/win10.img'/>
<br> <target dev='vda' bus='virtio'/>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
<br> </disk>
<br> <controller type='usb' index='0' model='ich9-ehci1'>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x7'/>
<br> </controller>
<br> <controller type='usb' index='0' model='ich9-uhci1'>
<br> <master startport='0'/>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0' multifunction='on'/>
<br> </controller>
<br> <controller type='usb' index='0' model='ich9-uhci2'>
<br> <master startport='2'/>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x1'/>
<br> </controller>
<br> <controller type='usb' index='0' model='ich9-uhci3'>
<br> <master startport='4'/>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x2'/>
<br> </controller>
<br> <controller type='pci' index='0' model='pci-root'/>
<br> <interface type='bridge'>
<br> <mac address='52:54:00:7a:ec:24'/>
<br> <source bridge='br0'/>
<br> <model type='virtio'/>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
<br> </interface>
<br> <input type='mouse' bus='ps2'/>
<br> <input type='keyboard' bus='ps2'/>
<br> <hostdev mode='subsystem' type='pci' managed='yes'>
<br> <source>
<br> <address domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
<br> </source>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
<br> </hostdev>
<br> <hostdev mode='subsystem' type='pci' managed='yes'>
<br> <source>
<br> <address domain='0x0000' bus='0x02' slot='0x00' function='0x1'/>
<br> </source>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
<br> </hostdev>
<br> <hostdev mode='subsystem' type='pci' managed='yes'>
<br> <source>
<br> <address domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>
<br> </source>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/><br></span><span style="font-family:monospace"><span style="color:rgb(0,0,0)"> </hostdev>
</span><br> <hostdev mode='subsystem' type='usb' managed='yes'>
<br> <source>
<br> <vendor id='0x04d8'/>
<br> <product id='0x00df'/>
<br> </source>
<br> </hostdev>
<br> <hostdev mode='subsystem' type='usb' managed='yes'>
<br> <source>
<br> <vendor id='0x1b1c'/>
<br> <product id='0x0c07'/>
<br> </source>
<br> </hostdev>
<br> <memballoon model='virtio'>
<br> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
<br> </memballoon>
<br> </devices>
<br></domain>
<br></span></div>