Comment 7 for bug 1750146

I'm using this workaround as a permanent solution. (while waiting for kernel patches for this problem)

- Install sysfsutils. (with synaptic or on terminal)
- edit this file with sudo - sudo nano /etc/sysfs.conf
- add this line at the end - /module/bluetooth/parameters/disable_ertm = 1
- reboot.

Now the controller is working without problems on Ubuntu 18.04.

On ubuntu 16.04.4 the controller start moving the mouse after the first workaround. If it happens use this:
- On terminal type - xinput list - and copy how your system recognize the gamepad. Generally is something
  like "Xbox Wireless Controller"
- Open a terminal and type - xinput --set-prop "Xbox Wireless Controller" "Device Enabled" 0
- Repeat that second trick every time you got the problem.

Regards! Hope it helps.