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I have bought a new Lenovo Edge E330 Notebook with an Intel Centrino Wireless-N 2230 network card. Currently, I am having some connectivity problems with Kubuntu 12.10. The card succeeds in finding available networks, but it seems to be not possible to connect to them. I have loaded the driver using:

modprobe iwlwifi 11n_disable=1

Sometimes, a connection is established but in this rare cases the speed is quite low. This performance problem seems not to occur with Windows 8 (where I also had to disable the n mode). Having tried module backports from Kernel 3.6 did unfortunately not help. What could be the source of the problem?

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