Both rt2800usb and the staging driver rt2870 are loaded. This is known
to sometimes cause malfunctions:

Apr 19 09:08:00 carrot kernel: [    9.580635] ieee80211 phy0: Selected rate 
control algorithm 'minstrel_ht'
Apr 19 09:08:00 carrot kernel: [    9.581429] Registered led device: 
rt2800usb-phy0::radio
Apr 19 09:08:00 carrot kernel: [    9.581454] Registered led device: 
rt2800usb-phy0::assoc
Apr 19 09:08:00 carrot kernel: [    9.581482] Registered led device: 
rt2800usb-phy0::quality
>Apr 19 09:08:00 carrot kernel: [    9.582069] usbcore: registered new 
>interface driver rt2800usb
...
>Apr 19 09:08:00 carrot kernel: [   10.068985] usbcore: registered new 
>interface driver rt2870

Please post the output of:
ls -lh /sys/bus/usb/drivers/rt2870/
ls -lh /sys/bus/usb/drivers/rt2800usb/

and then blacklist the rt2870sta module, shut down and boot (it is safer
than to just reboot in this case) and try again.


** Tags added: rt2800usb

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/765606

Title:
  [STAGING] rt2x00 won't connect to network

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