When I run vainfo I get this error:
libva info: VA-API version 1.4.1
libva info: va_getDriverName() returns -1
libva info: User requested driver 'iHD'
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_4
DRM_IOCTL_I915_GEM_APERTURE failed: Invalid argument
Assuming 131072kB available aperture size.
May lead to reduced performance or incorrect rendering.
get chip id failed: -1 
param: 4, val: 0
libva error: /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so init failed
libva info: va_openDriver() returns 1
vaInitialize failed with error code 1 (operation failed),exit
I use 19.04 linux version, How can I resolve this?
We dont officially support 19.04 it could be an issue there especially with the kernel and default packages being different than we have built and validated against but I will help you as best as I can.
Can you tell me the steps you took to create this issue?
Did you simply install Openvino ?
if so could you try doing this export LIBVA_DRIVERS_PATH=/opt/intel/mediasdk/lib64 and trying vainfo again and see if you get anything different.