Problems with FULLSCREEN 640x480 on Ubuntu 20.04?


is anyone having trouble with fullscreen on Ubuntu 20.04?

I’ve got completely black screen after updating to Ubuntu 20.04 (from Ubuntu 18.04) (non-fullscreen though)

Fullscreen feels choppy when I switched from Linux Mint 19 to 20. Windowed mode is fine. Also I’m using openGL directly.