Instale um driver dessa maneira. Conecte-se à internet por fio e execute
sudo apt-get install linux-generic
reinicialize e execute
sudo apt-get install git build-essential dkms
git clone https://github.com/lwfinger/rtl8188eu.git
sudo dkms add ./rtl8188eu
sudo dkms install 8188eu/1.0
e reinicie.