装了ubuntu12发现无线网卡不能用网上查了一下，发现这样装可以，分享给大家，linux的易用性跟windows比起来还是有不小差距啊。

sudo apt-get install linux-headers-generic build-essential
wget http://www.orbit-lab.org/kernel/compat-wireless-3-stable/v3.6/compat-wireless-3.6.6-1-snpc.tar.bz2
tar xvf compat*
cd compat-wireless-3.6.6-1-snpc
sudo su
./scripts/driver-select ath9k
make
make install
modprobe ath9k
exit