After I installed Ubuntu 8.04 on my Laptop [Lenovo T60], it did not start wireless interface and LED wireless could not on too.
And this is my solution :
1. Enable Wireless interface
1.1 Open /etc/modprobe.d/options file :
# sudo vi /etc/modprobe.d/options
1.2 Add this line
options iwl3945 disable_hw_scan=1
2. Enable LED Wireless.
# sudo apt-get install linux-backports-modules-2.6.24-16-generic linux-backports-modules-hardy-generic
3. Restart
Aoddy
Wife lover.