[vfio-users] Audio sync issues Windows 10
Brandon Ganem
brandonganem at gmail.com
Mon Dec 19 03:33:13 UTC 2016
I'm passing through USB, but only a mic is on that for audio. 00:1b.0
(intel built in audio) and nvidia HDMI audio both have the issue.
On Sat, Dec 17, 2016 at 3:58 PM, Zachary Boley <zboley00 at gmail.com> wrote:
> Doesn't look like it but are you passing a USB controller in for it? Can't
> really see how you're using audio
>
> On Dec 16, 2016 2:39 PM, "Brandon Ganem" <brandonganem at gmail.com> wrote:
>
>> Hi all,
>> I've got a Windows 10 VM on top of arch linux. It appears that after some
>> period of time my audio / video loses sync for long running videos (youtube
>> for example). Switching audio devices in "sound options" in windows causes
>> the video to sync back up to the audio.
>>
>> The audio does not appear to be distorted, it's almost as if the video
>> slows down by a frame or two and over time that's enough to drop the sync.
>>
>>
>>
>> Here's my XML:
>> <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0
>> '>
>> <name>win10_gaming_1</name>
>> <uuid>01bd2ed1-b465-4eba-b6e4-47c6ac8171c6</uuid>
>> <memory unit='KiB'>16777216</memory>
>> <currentMemory unit='KiB'>16777216</currentMemory>
>> <vcpu placement='static'>12</vcpu>
>> <iothreads>2</iothreads>
>> <iothreadids>
>> <iothread id='1'/>
>> <iothread id='2'/>
>> </iothreadids>
>> <cputune>
>> <vcpupin vcpu='0' cpuset='2'/>
>> <vcpupin vcpu='1' cpuset='3'/>
>> <vcpupin vcpu='2' cpuset='4'/>
>> <vcpupin vcpu='3' cpuset='5'/>
>> <vcpupin vcpu='4' cpuset='6'/>
>> <vcpupin vcpu='5' cpuset='7'/>
>> <vcpupin vcpu='6' cpuset='8'/>
>> <vcpupin vcpu='7' cpuset='9'/>
>> <vcpupin vcpu='8' cpuset='12'/>
>> <vcpupin vcpu='9' cpuset='13'/>
>> <vcpupin vcpu='10' cpuset='14'/>
>> <vcpupin vcpu='11' cpuset='15'/>
>> <emulatorpin cpuset='0-1'/>
>> <iothreadpin iothread='1' cpuset='0'/>
>> <iothreadpin iothread='2' cpuset='1'/>
>> <iothreadsched iothreads='2' scheduler='batch'/>
>> </cputune>
>> <os>
>> <type arch='x86_64' machine='pc-i440fx-2.5'>hvm</type>
>> <loader readonly='yes' type='pflash'>/usr/share/edk2.
>> git/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
>> <nvram template='/usr/share/edk2.git/ovmf-x64/OVMF_VARS-pure-efi.fd
>> '>/var/lib/libvirt/qemu/nvram/win10_gaming_1_VARS.fd</nvram>
>> <boot dev='hd'/>
>> </os>
>> <features>
>> <acpi/>
>> <hyperv>
>> <relaxed state='off'/>
>> <vapic state='off'/>
>> <spinlocks state='off'/>
>> </hyperv>
>> <kvm>
>> <hidden state='on'/>
>> </kvm>
>> </features>
>> <cpu mode='host-passthrough'>
>> <topology sockets='1' cores='6' threads='2'/>
>> </cpu>
>> <clock offset='localtime'>
>> <timer name='hypervclock' present='no'/>
>> </clock>
>> <on_poweroff>destroy</on_poweroff>
>> <on_reboot>restart</on_reboot>
>> <on_crash>destroy</on_crash>
>> <devices>
>> <emulator>/usr/sbin/qemu-system-x86_64</emulator>
>> <disk type='file' device='disk'>
>> <driver name='qemu' type='raw' cache='writethrough'/>
>> <source file='/flash/win_gaming_1.img'/>
>> <target dev='vda' bus='virtio'/>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x09'
>> function='0x0'/>
>> </disk>
>> <disk type='file' device='disk'>
>> <driver name='qemu' type='raw' cache='writethrough'/>
>> <source file='/vmstore/steam/gaming_1/steam_library.img'/>
>> <target dev='vdb' bus='virtio'/>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x0a'
>> function='0x0'/>
>> </disk>
>> <controller type='pci' index='0' model='pci-root'/>
>> <controller type='virtio-serial' index='0'>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
>> function='0x0'/>
>> </controller>
>> <controller type='usb' index='0' model='piix3-uhci'>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
>> function='0x2'/>
>> </controller>
>> <interface type='bridge'>
>> <mac address='52:54:00:a0:41:92'/>
>> <source bridge='br0'/>
>> <model type='virtio'/>
>> <rom bar='off'/>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
>> function='0x0'/>
>> </interface>
>> <input type='mouse' bus='ps2'/>
>> <input type='keyboard' bus='ps2'/>
>> <memballoon model='virtio'>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
>> function='0x0'/>
>> </memballoon>
>> </devices>
>> <qemu:commandline>
>> <qemu:arg value='-device'/>
>> <qemu:arg value='ioh3420,bus=pci.0,addr=
>> 1c.0,multifunction=on,port=1,chassis=1,id=root.1'/>
>> <qemu:arg value='-device'/>
>> <qemu:arg value='vfio-pci,host=02:00.0,b
>> us=root.1,addr=00.0,multifunction=on,x-vga=on'/>
>> <qemu:arg value='-device'/>
>> <qemu:arg value='vfio-pci,host=02:00.1,b
>> us=root.1,addr=00.1,multifunction=on'/>
>> <qemu:arg value='-device'/>
>> <qemu:arg value='vfio-pci,host=00:14.0,b
>> us=root.1,addr=00.2,multifunction=on'/>
>> <qemu:arg value='-device'/>
>> <qemu:arg value='vfio-pci,host=00:1a.0,b
>> us=root.1,addr=00.3,multifunction=on'/>
>> <qemu:arg value='-device'/>
>> <qemu:arg value='vfio-pci,host=00:1b.0,b
>> us=root.1,addr=00.4,multifunction=on'/>
>> </qemu:commandline>
>> </domain>
>>
>>
>> LSPCI:
>> 02:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX
>> 960] (rev a1) (prog-if 00 [VGA controller])
>> Subsystem: Micro-Star International Co., Ltd. [MSI] Device 3202
>> Physical Slot: 4
>> Flags: bus master, fast devsel, latency 0, IRQ 26, NUMA node 0
>> Memory at fa000000 (32-bit, non-prefetchable) [size=16M]
>> Memory at c0000000 (64-bit, prefetchable) [size=256M]
>> Memory at d0000000 (64-bit, prefetchable) [size=32M]
>> I/O ports at e000 [size=128]
>> Expansion ROM at fb000000 [disabled] [size=512K]
>> Capabilities: [60] Power Management version 3
>> Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
>> Capabilities: [78] Express Legacy Endpoint, MSI 00
>> Capabilities: [100] Virtual Channel
>> Capabilities: [258] L1 PM Substates
>> Capabilities: [128] Power Budgeting <?>
>> Capabilities: [420] Advanced Error Reporting
>> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1
>> Len=024 <?>
>> Capabilities: [900] #19
>> Kernel driver in use: vfio-pci
>> Kernel modules: nouveau
>>
>> 02:00.1 Audio device: NVIDIA Corporation Device 0fba (rev a1)
>> Subsystem: Micro-Star International Co., Ltd. [MSI] Device 3202
>> Physical Slot: 4
>> Flags: bus master, fast devsel, latency 0, IRQ 51, NUMA node 0
>> Memory at fb080000 (32-bit, non-prefetchable) [size=16K]
>> Capabilities: [60] Power Management version 3
>> Capabilities: [68] MSI: Enable+ Count=1/1 Maskable- 64bit+
>> Capabilities: [78] Express Endpoint, MSI 00
>> Kernel driver in use: vfio-pci
>> Kernel modules: snd_hda_intel
>>
>> 00:1b.0 Audio device: Intel Corporation C610/X99 series chipset HD Audio
>> Controller (rev 05)
>> Subsystem: ASRock Incorporation Device 1151
>> Flags: bus master, fast devsel, latency 0, IRQ 22, NUMA node 0
>> Memory at fb330000 (64-bit, non-prefetchable) [size=16K]
>> Capabilities: [50] Power Management version 2
>> Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
>> Capabilities: [70] Express Root Complex Integrated Endpoint, MSI
>> 00
>> Capabilities: [100] Virtual Channel
>> Kernel driver in use: vfio-pci
>> Kernel modules: snd_hda_intel
>>
>> 00:1d.0 USB controller: Intel Corporation C610/X99 series chipset USB
>> Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
>> Subsystem: ASRock Incorporation Device 8d26
>> Flags: medium devsel, IRQ 18, NUMA node 0
>> Memory at fb337000 (32-bit, non-prefetchable) [size=1K]
>> Capabilities: [50] Power Management version 2
>> Capabilities: [58] Debug port: BAR=1 offset=00a0
>> Capabilities: [98] PCI Advanced Features
>> Kernel driver in use: vfio-pci
>> Kernel modules: ehci_pci
>>
>> 00:1a.0 USB controller: Intel Corporation C610/X99 series chipset USB
>> Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
>> Subsystem: ASRock Incorporation Device 8d2d
>> Flags: bus master, medium devsel, latency 0, IRQ 18, NUMA node 0
>> Memory at fb338000 (32-bit, non-prefetchable) [size=1K]
>> Capabilities: [50] Power Management version 2
>> Capabilities: [58] Debug port: BAR=1 offset=00a0
>> Capabilities: [98] PCI Advanced Features
>> Kernel driver in use: vfio-pci
>> Kernel modules: ehci_pci
>>
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>>
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