I work at a startup. We have high-end System76 Linux Desktops...and we still cant get the video driver working on Ubuntu with Dell Ultrasharp monitors. The monitor half works and acts up every time the plug moves or every time we take the laptop mobile and plug it back in.

I cant imagine a retail desktop user tolerating these things.

Aside: There was some only-half-joking discussion in the office that someone should attempt to re-write the display driver as a 20% time project.