还好在网上搜了一下，在answers.launchpad.net上，一哥们儿和我一样倒霉，不过下面一老外牛人给出了解决方案。照葫芦画瓢，在终端里复制粘贴了一番，居然解决了。
https://answers.launchpad.net/ubuntu/+question/74211
特整理如下：
Step 1: Open Terminal from "Applications->Accessories->
Terminal"
应用程序－－－附件－－－终端
Step 2: Run the following commands (copy-paste each line into the Terminal, press <enter> after each line)
复制粘贴以下命令
sudo aptitude update
sudo aptitude install build-essential subversion
cd ~
wget http://snapshots.madwifi-project.org/ma ... ent.tar.gz
tar xvf madwifi-trunk-current.tar.gz
cd madwifi-trunk-r4031-20090529
make
sudo make install
gksudo gedit /etc/modules
# Now add the Atheros kernel module ath_pci to the list of modules to be automatically loaded at boot by adding
ath_pci
# to the end of the /etc/modules file. (Gedit editor automatically opens)
＃之间为注释：在/etc/modules文件后加上ath_pci一行
gksudo gedit /etc/modprobe.d/blacklist.conf
# Now add the following 3 lines at the end of the /etc/modprobe.d/blacklist.conf file:
blacklist ath5k_pci
blacklist ATL1E
blacklist ath5k
＃之后为注释：在/etc/modprobe.d/blacklist.conf文件后加入以上以blacklist开头的三行。
# Now you can reboot and it should work.
重启，找到无线网络列表。
