Edit: I’m glad so many of you have had no issues with multiple monitors. My set up is a little unusual (3rd display is an infrequently used large tv hooked through the receiver) and is definitely solveable but will take some effort (and honestly, I’d rather spend my spare time outside or with friends, so who knows when I’ll fix it.)
lol, getting all displays working is indeed my biggest worry for my last Windows PC, migrating next month. It has both an NVIDIA and a Radeon GPU, and that works great on Windows. But a quick test boot from USB did not go so well on Ubuntu, so the truth will only come out after a real install with drivers.