Installing TLP power save stopped my wifi adapter from working

I am new to Ubuntu. I finally decided to dual boot (I need windows for ONE program: ArcGIS). Everything was going fine until I took my laptop to class and realized my battery power was draining like crazy (1.5 hours remaining at the start of a 3 hour lecture).

Due to this predicament, I decided to try out tlp. I followed a guide online on how to install tlp through the terminal and my Wifi stopped working.

How can I fix it?

Solution 1:

To disable wifi powersave in TLP permanently on battery you don't have to fiddle with iwconfig or rc.local (won't work reliable anyway).

Change the following line in TLP's configuration instead:

WIFI_PWR_ON_BAT=N