libva error: va_getDriverName() failed with unknown libva error,driver_name=(null)

I'm doing a QT program and I'm getting this error on my Ubuntu (it's a VM):

`libva error: va_getDriverName() failed with unknown libva error,driver_name=(null) `

I tried all possible solutions on web and they didn't work.

I found that `export LIBVA_DRIVER_NAME=i965` could work, but with it, I have the following errors:

```
libva error: /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so init failed
libva error: /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so init failed

```

What can be done?