My lenovo x201 has a constant problem of disconnecting after a short period of time. I have reason to believe that this is because it switches to power off to save energy. How do I manage wifi driver in Ubuntu. I'm new to it but in windows I would fix this by, control panel -> system properties -> device manager -> under wireless card select property.
-untick windows device swithoff for power saving -Power output to maximum -Roaming aggressiveness to low.