Open a terminal and type:sudo apt-get install firmware-atherosYou need to have internet access to do this, it can be wired. If you don't there are other ways to get it. Let me know and I can help you get it.
Still run sudo apt-get update but change the second command to sudo apt-get install firmware-atherosI'm not sure what the atheros driver is called so restart after the install completes. You will need to be connected to the internet to do this. A wired connection should configure as soon as you plug it in.
My laptop has had problems both with WiFi and wired internet connection lately. When I check my Network Center, it says I have an Atheros AR8131 for Ethernet Controller and an Atheros AR9285 Wireless Adapter.
Are these two different pieces of hardware or just one? I am looking to buy replacement parts and was thinking about getting an Intel n-6200. Does this work for both WiFi and wired?