Created attachment 220103 [details]
Log of network manager when deactivating the wlan

Using Debian GNU/Linux sid with Linux 3.4, with an iwlwifi NIC.

When clicking in GNOME Shell or nm-applet to disable Wifi, it's impossible to reactivate it. It is said to be "hardware disabled". Indeed, it seems that Network Manager activated the rfkill switch:

% sudo rfkill list
0: sony-wifi: Wireless LAN
	Soft blocked: yes
	Hard blocked: no
1: sony-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: yes
	Hard blocked: yes
3: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

I have to do "rfkill unblock 0" to be able to activate wifi again in NetworkManager.

Debug log when I deactivate the wlan from gnome-shell is attached. There's 2 debug traces, in the second one I had reloaded sony-laptop with debug=1 to see what happens with the rfkill switch.