Now I'm writing this on a Yoga Pro 2, which is nice in principle, but it's slowly starting to get wobbly, screws are falling out, the color is peeling off the keys, and I can't use Linux because the color yellow is replaced with fricking MUSTARD if you don't load a specific Windows only driver.
I actually poked a bit around in the drivers, and Lenovo fixes the problem by sending a few bytes to the Embedded Controller (a microcontroller on the motherboard). Lenovo doesn't give out the neccessary information, but I could reverse engineer it by kernel-debugging Windows. But the only way to do that on this Laptop would be via a special crossover USB3 debugger cable, which is out of sale. Before I soldered my own, I just gave up, and am now using Windows...
My next PC is going to be an Asus or a Dell (who would have thought a few years ago...).