Comment 30 for bug 546871

I was having random and frequent freezes/crashes with 2.6.32-22-generic lucid and network manager on my t41p with ar5212 chipset.
I removed network manager and installed wicd. That seems to have got rid of freezes crashes. But then it would connect fine at home with a wap2 ap but not at a friends place with a normal non encrypted ap. It would just not see any wireless network.

Going to command line and doing the following as root fixed it.
# to view available wireless
iwlist wlan0 scan
# to connect to a an ap ssid1
iwconfig wlan0 essid ssid1
# to get ip address
dhclient3 wlan0 &