How to enable wifi using keyboard (Dell Inspiron 14r) in suse Linux 11.4

I have installed both Windows and SUSE Linux (11.4) on my Dell Inspiron 14r laptop. Both are working properly. I am facing one strange problem. I went to my Linux OS WiFi was working fine and I pressed fn+f2 in-order to disable WiFi. WiFi got disable successfully but when I again pressed fn+f2 it is not enabling WiFi. I can see WiFi disabled. Instead of that bluetooth icon got enable. Then I switched to Windows and again pressed fn+f2 and WiFi got enabled. Then I switched to Linux OS and I can see my WiFi enabled. Again I pressed fn+f2 and it got disabled and I'm not able to enable it by pressing fn+f2 again. How can I enable WiFi on SUSE (11.4)?