atheros wireless ar9285 driver
The driver is already installed by default but it does not work great, but there is a tweak we can do to help.
echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf
sudo modprobe -rfv ath9k
sudo modprobe -v ath9k
I tried the following solution and it worked fine for me:
sudo -i
echo "options ath9k nohwcrypt=1 ps_enable=1" >> /etc/modprobe.d/ath9k.conf
modprobe -r ath9k
modprobe ath9k nohwcrypt=1
modprobe ath9k ps_enable=1
Then, reboot your system to take affect.
To get more option, see here