Apparently the Fn-F7 option on the Lattitude 13 and other models causes breakage with Ubuntu 11.04 putting blocks on wireless.
So if you’re getting:
tail -f /var/log/syslog
Jun 28 11:58:43 latitude13 kernel: [42125.406612] iwlagn 0000:0c:00.0: RF_KILL bit toggled to enable radio.
Jun 28 11:58:45 latitude13 kernel: [42127.020863] iwlagn 0000:0c:00.0: RF_KILL bit toggled to disable radio.
You’ll be pleased to know if you can see the card:
lspci -nnk
0c:00.0 Network controller [0280]: Intel Corporation WiFi Link 5100 [8086:4232]
Subsystem: Intel Corporation WiFi Link 5100 AGN [8086:1321]
Kernel driver in use: iwlagn
Kernel modules: iwlagn
You can check the rf status:
rfkill list
0: dell-wifi: Wireless LAN
Soft blocked: yes
Hard blocked: no
1: dell-bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
2: dell-wwan: Wireless WAN
Soft blocked: yes
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
Then unblock the spanner:
sudo rfkill unblock 3
Start back up Wireless:
sudo ifconfig wlan0 up
