This is their consumer-focused Yoga. Their Thinkpad Yoga does not have any issues running Linux.

The only issue I've ever had with Thinkpad laptops was the Prime Nvidia/Intel video card switching... which is very similar to this in that it just wasn't supported by the drivers.

I see that Dell just had a big expansion of their Developer Editions... good for them! But it still appears that a fresh install of Ubuntu takes manual configuration of video drivers and power managment, meaning that they haven't figured out how to really make embracing Ubuntu smooth.