I’ve made Ubuntu my daily driver, switching from Windows 11, and I’m pleased to report that I haven’t encountered any issues while using Unreal Engine 5. I’ve even successfully compiled some Meta Quest 2 projects. While Epic Games’ documentation often lacks Linux-specific information, I’ve found that, for the most part, the Windows documentation applies to Ubuntu as well. The good news is that Lumen, Nanite, Virtual Shadow Maps, and Virtual Textures are all functioning as expected. Just keep in mind that you might need to run the latest proprietary NVIDIA drivers. Unfortunately, I can’t provide insights into AMD card support on Ubuntu since I don’t have one.
If it helps, my computer specs are as follows:

