VA-API on VM dont work!

[Sub7]

Hey,

VA-API shows an error on VM,
can someone help me please.
need that for my FFmpegUI project (https://github.com/Sub-7/FFmpegUI)

vainfo on VM Ubuntu 18.04:
error: can't connect to X server!
libva info: VA-API version 1.1.0
libva info: va_getDriverName() returns -1
libva error: va_getDriverName() failed with unknown libva error,driver_name=(null)
vaInitialize failed with error code -1 (unknown libva error),exit

LXC & Ubuntu 18.04 (same HW) OK

Spoiler: LXC Ubuntu 18.04 :vainfo

error: can't connect to X server!
libva info: VA-API version 1.1.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_1_1
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.1 (libva 2.1.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Coffee Lake - 2.1.0
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Simple : VAEntrypointEncSlice
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointEncSlice
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointEncSliceLP
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointEncSliceLP
VAProfileH264MultiviewHigh : VAEntrypointVLD
VAProfileH264MultiviewHigh : VAEntrypointEncSlice
VAProfileH264StereoHigh : VAEntrypointVLD
VAProfileH264StereoHigh : VAEntrypointEncSlice
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileNone : VAEntrypointVideoProc
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileVP8Version0_3 : VAEntrypointVLD
VAProfileVP8Version0_3 : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointEncSlice
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointEncSlice
VAProfileVP9Profile2 : VAEntrypointVLD

Spoiler: VM Conf

bootdisk: scsi0
cores: 12
cpu: host
hostpci1: 03:00,pcie=1
ide2: none,media=cdrom
machine: q35
memory: 13000
name: MakeMKV2
net0: virtio=02:4C:CD:A3:7B:3E,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: OS-SSD:vm-501-disk-0,size=200G
scsihw: virtio-scsi-pci
smbios1: uuid=8e29b973-032d-4e8b-a38b-3944ac8f91cc
sockets: 1
vga: virtio,memory=512
vmgenid: f94c92bd-084b-4fd9-8e3e-089c70bfb846

Spoiler: /dev/dri

by-path
card0
renderD128

Spoiler: lscpu

Architektur: x86_64
CPU Operationsmodus: 32-bit, 64-bit
Byte-Reihenfolge: Little Endian
CPU(s): 12
Liste der Online-CPU(s): 0-11
Thread(s) pro Kern: 1
Kern(e) pro Socket: 12
Sockel: 1
NUMA-Knoten: 1
Anbieterkennung: GenuineIntel
Prozessorfamilie: 6
Modell: 158
Modellname: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
Stepping: 10
CPU MHz: 3696.000
BogoMIPS: 7392.00
Hypervisor-Anbieter: KVM
Virtualisierungstyp: voll
L1d Cache: 32K
L1i Cache: 32K
L2 Cache: 4096K
L3 Cache: 16384K
NUMA-Knoten0 CPU(s): 0-11
Markierungen: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon rep_good nopl xtopology cpuid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti ssbd ibrs ibpb fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves arat

Spoiler: lspci -k | grep -EA3 'VGA|3D|Display'

00:01.0 VGA compatible controller: Red Hat, Inc. Virtio GPU (rev 01)
Subsystem: Red Hat, Inc. Virtio GPU
Kernel driver in use: virtio-pci

 

[LnxBil]

IMHO the VA-API is part of the graphics driver, so you cannot have it inside of a VM until you passthrough your GPU.

 

[Sub7]

I have it

Spoiler: Working Config

agent: 1
bios: ovmf
boot: cdn
bootdisk: scsi0
cores: 12
cpu: host
efidisk0: OS-SSD:vm-500-disk-0,size=4M
Nvidia > hostpci0: 01:00,x-vga=1,pcie=1,rombar=0
Intel IGD > hostpci1: 00:02.0
hostpci2: 05:00
machine: q35
memory: 9480
name: MakeMKV
net0: virtio=A6:B5:CF:87:27:8D,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: OS-SSD:vm-500-disk-1,size=300G
scsihw: virtio-scsi-pci
smbios1: uuid=07bb6441-0e78-413e-a72f-9af15014aa6e
sockets: 1
vga: none
vmgenid: 141158b3-c2de-4099-952c-30c8973caf3c