Wireless Xbox One Controller on Ubuntu
The first-gen Xbox One controller wireless dongle doesn't natively work on Ubuntu. Luckily, it's pretty simple to install a driver that fixes that.
xow is a third-party Linux driver that supports most Xbox One controllers.
sudo apt-get install libusb-1.0-0-dev cabextract
git clone https://github.com/medusalix/xow
sudo make install
sudo systemctl enable xow
sudo systemctl start xow
After rebooting, the light on the dongle should light up. Now you can connect as usual.