Comment 58 for bug 1160188

Gerry and others: I'll try to give instructions that don't "skip" any steps, hopefully it'll help. Steps 2-7 are commands you should just copy paste in terminal.

1. Open Dash and search for Terminal and open it
2. wget https://www.kernel.org/pub/linux/kernel/projects/backports/2013/06/18/backports-20130618.tar.xz
3. tar xvf backports-20130618.tar.xz
4. cd backports-20130618
5. make defconfig-ath9k
6. make
7. sudo make install
8. (insert your password when sudo asks it).
9. Ready! Reboot the computer.

The new drivers should then be in use, but note you will need to do the steps 4-7 again if a Linux kernel update comes as a security update or otherwise.