thats lot of edges cases. Ubuntu has been main desktop OS for last 5 years. No issues till now. I even play Steam games. 
But my MacBook Pro has been regressing. It used to be that evey install of Ubuntu i would need to tweak it. Now i do that on every install on Mac OSX. Ubuntu even runs faster on the laptop then El Captiano. If not for the touch pad issues Ubuntu would have been my default laptop OS.