I have a dual band Linsys 4200E router. On laptops running 12.04 on one and 14.04 on the other I can connect at 2.4GHz but not 5GHz. There are 3 android devices in the house that can connect to the 5GHz so I know it is working. Is there some way to find out if the cards/drivers are capable of 5GHz under Ubuntu? Thanks, Jim