Please look at the below thread
Seems Tengine/TIM-VX examples fails with the new EMMC ubuntu firmware for Khadas VIM3, while it works for the older version
We are actively looking for support to enable Tengine/TIM-VX exaples of new ubuntu image.
Since the Tengine, TIM-VX and galcore version used were the same and we only changed the ubuntu image, we feel some change in the ubuntu image broke this
Please help us here