[UPDATE]
You can use Lakka from USB-Stick, so you don’t have to alter something on your system. (assumed booting from stick is not disabled in the BIOS/UEFI).
Use this image: http://nightly.builds.lakka.tv/PRs/pr_838_000118/Generic.x86_64/
This shows, that it is definitively a problem with the driver and not with the card.
Be aware, that not all shaders are working, e.g. multi-pass shaders goes black, but i heard this is a known behaviour with Video Layout
in general.