vaapi is enabled but not usable

[mc4man]

Typically requires access to /dev/dri/.. which is not allowed so no hardware encoding or decoding via vaapi
Simple enc ex.
ffmpeg -vaapi_device /dev/dri/renderD128 -i input.mp4 -vf 'format=nv12,hwupload' -c:v h264_vaapi -b:v 5M output.mp4

[extraymond]

Can confirm on ubuntu 18.04 as well.

GPU: rx 480
Driver: paulo-miguel-dias ppa