[xubuntu-users] wifi interface not starting with Xubuntu 11.10

[Lee Gold]

I have, Network controller: Intel Corporation PRO/Wireless 4965 AG or
AGN [Kedron] Network Connection (rev 61)

This laptop wifi often does not start in Xubuntu, I try everything I
know how to do but usually I have to reboot then it starts. 

I try,  sudo ifconfig wlan0 up
and get: 
SIOCSIFFLAGS: Operation not possible due to RF-kill
now: Unknown host

sudo iwconfig wlan0 txpower on, doesn't help.

Is there a way to find out what the issue is and fix. It's intermittant
in a way, sometimetimes it doesn't happen. A reboot usually fixes it.
Thanks

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