Ubuntu – Wifi slows down if I connect with Bluetooth device on Ubuntu 14.10


I have a 75 Mbit/s Wifi connection and the Wifi generally works great and fast. Although if I connect to any bluetooth device (e.g. some Audio device) the Wifi suddenly slows down significantly, but I still have a strong signal.

I am currently running Ubuntu 14.10 with Unity on a Dell Vostro V131

Is the bluetooth interfering with the Wifi, or is it a Hardware/Software problem?

If there are any outputs you need to see please let me know.

Thanks in advance!

Best Answer

There is one thing that might help, and that is to disable bluetooth coexistence in the iwlwifi module

sudo modprobe -r iwlwifi
sudo modprobe iwlwifi bt_coex_active=N

If it works, you can make it persistant with echo "options iwlwifi bt_coex_active=N" | sudo tee -a /etc/modprobe.d/iwlwifi.conf

If it causes problems, just sudo modprobe -r iwlwifi

sudo modprobe iwlwifi