Ryzens do not have an integrated GPU, at least not at the moment. The CPU itself works out of the box, even slightly more exotic features like virtualization is flawless under KVM.

If you want a Ryzen-based desktop with "just works experience" similar to i7-based Intels, go with a Radeon RX460 or RX560 GPU. It will get picked up by the open source AMDGPU driver in the latest popular desktop distros.