I have a Lenovo Yoga 13 and love it, except for the fact that I couldn’t get wireless working on Ubuntu. That is, until now. Thankfully, a github user by the name of lwfinger has a solution. If you have an internet connection, via a USB dongle, simply perform the following in the terminal:
apt-get install git git clone https://github.com/lwfinger/rtl8723au cd rtl8723au make sudo make install sudo modprobe 8723au
If you don’t happen to have internet connection, just grab this package and copy it to your home folder, then run the following:
tar xzvf yoga13realtekwireless.tar.gz cd yoga13realtekwireless make sudo make install sudo modprobe 8723au
lwfinger also has the Bluetooth driver if you visit his github site.