Here is a way to temporary fix the problem:
http://askubuntu.com/questions/442963/tl-wn821n-wifi-not-working-
correctly/490992#490992
Maybe the fix in the github repo could be added into the next release?
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** Tags added: trusty
** Package changed: ubuntu = network-manager (Ubuntu)
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https://bugs.launchpad.net/bugs/1310338
Title:
wifi stops working
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