I recently installed Ubuntu 13.10 to dual-boot with windows. While WiFi is completly fine on Windows and I can access it anywhere in my house, it's absolutety not the case on Ubuntu. As soon as I'm not near my router, the WiFi is out of range and I can't select it anymore. The only times it worked, it lost connection <1 minute later.
My Wifi card is a Qualcomm Atheros AR9285, if necessary.
Any help would be appreciated a lot, thanks.