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困擾我許久的問題
同一台機器上，用 FC5 or SuSE 10.1，NetworkManager 都運作很正常，無線網卡也抓得到
唯獨 Ubuntu 上的就找不到
問了估狗大神後，終於找到答案了

因為 Debian and Ubuntu 有改過 NetworkManager 的程式碼，所以…
因此，傳統的 ifconfig or NetworkManager 只能二選一
若要用 ifconfig 來設定網路，那在 /etc/network/interfaces 裡就會有:

auto eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet dhcp
wireless-essid myap

若這樣，NetworkManager 就不會去管 eth0 eth1 這兩張網卡了

因此，若你想要讓 eth1 這張無線網卡交給 NetworkManager 來管理
就要把 eth1 的部份註解掉

#auto eth1
#iface eth1 inet dhcp
#wireless-essid myap

我的無線網卡終於出現了…Orz

NetworkManagerFAQ:
Debian and Ubuntu modified NetworkManager so that it would not manage any devices listed in /etc/network/interfaces. If you open this file and comment out the lines for the interfaces you want to manage and reboot NetworkManager will see them. **Do not comment out l0**

Ubuntu NetworkManager WifiDocs
Devices which are automatically configured on boot will not be available in NetworkManager. To allow network manager to use all of your devices remove instances of auto in /etc/network/interfaces. (apart from the “auto lo” line, which is needed for the loopback interface)