I would like to find a wireless adapter for enabling ad hoc or AP mode on Ubuntu that works "out of box". I have tried edimax 7811Un without success and would like to find another adapter that will work without giving me any trouble. Can someone recommend an adapter that they have had success with?
SnapOverflow
To create an ad-hoc or hotspot using your wireless adapter, DON'T use the Create New Wi-fi Network from the network icon in the top panel. One reason is because you'll only be able to do WEP security.
Rather, go to Edit Connections... in the network icon menu, and ADD a new Wi-Fi profile. In the Wi-fi tab, change the mode to ad-hoc or hotspot, and in the security tab, choose WPA2. As seen below...