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Sometimes I clicked this network button:

http://www.divshare.com/download/15716721-6fa

Why it doesn't work (just like I haven't clicked it)?

When it failed, only when I reboot,it works again.

Sometimes it failed again.

What could I do?

I use ubuntu 11.04 64 bits.

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2 Answers 2

up vote 1 down vote accepted

Try this when it doesn't work - sudo service network-manager restart . That will restart the network-manager applet.

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If the above does not work then you can try this:

sudo modprobe -rfv ath9k
sudo rfkill unblock all
sudo modprobe -v ath9k

which a temporary solution. It will work until you reboot. For more details and a permanent solution:

http://ubuntuforums.org/showthread.php?t=1895671

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can you please provide details of the "permanent solution"? –  amc Jul 19 '13 at 6:34
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