5GHz wireless on Ubuntu

[Nils Kassube]

Jim Byrnes wrote:
> 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?

The command

iw phy0 info

should list the frequencies (among lots of other things) on which your 
card can operate. If that command doesn't work (some cards may not use 
the necessary driver for that command), can you post the output of the 
command

sudo lshw -C network

in a terminal? That should tell us which WLAN card is used in your 
machine.


Nils