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I've annoying problem with wi-fi connection on Lenovo B570e with "02:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)" card. It works on Ubuntu 12.04 LTS. Connection is unstable, it disconnects sometimes after few minutes. It seems, that it's a matter of loosing the wi-fi range. If someone has a solution for this case please help... I'm fighting with this problem since 3 days and I'm frustrated... :(

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