I'd like to add a few cents myself. I am running Kubuntu 16.10 on my Elite X2 1012 G1, 8GB m5, and almost everything is working.
-Screen works
-Touchscreen works
-Wacom pen works (Touchscreen can be disabled separately, meaning you can then rest your hands fully on the screen and still use the pen)
-Front camera works
-Suspend and Hibernate work, but:
-Bluetooth works, but stops working after suspend.
Code:
rmmod btusb && modprobe btusb
solve the problem - but that's inconvenient if you are using a bluetooth keyboard like me.
-Wifi works
I have no 4G/LTE installed.
-The backcamera doesn't work. No idea how to activate it, there seems to be no driver around that would be able to claim it.
-Fingerprint reader doesn't work. There seems to be binary blob floating around, but it's unfree and requires recompilation of the fingerprint libraries, which I have not done (yet).
I tried a Dell DA200 thunderbolt mini dock, and it worked fine.
There appears to be ways to make the screen rotate automatically, but I currently don't want that so I didn't try.
If anyone has any clue how to make the back camera work, I'd really appreciate a tip!