Where is my 5GHz Wi-Fi network ?

Hello,
In first, please excuse me for my bad english, I'm french and I don't speak english very well.

I have Downloaded and Install Zorin OS 10 Core 64 bit on two of my 7 computers and I have a problem on 1 of it.
I have an external Wi-Fi key conneted in USB to an USB port of my PC. This PC desn't have an internal Wi-Fi card.

I have an AirPort Extrem ac released in June 2013, because I use Mac too.
Problem, in my PC, I just have my 2.4GHz network that appear. My external Wi-Fi key is normaly compatible with both 2.4 and 5GHz network and my AirPort extrem diffuse the 2 differents frequency.

I have the same problem in Ubuntu and the different variant of it but not on Windows. On Windows I think that I have the 5GHz appear in my network.
I have this problem recently. Some months ago I don't have this problem.

Thanks you for your futur help and again sorry for my very poor english.

Cordially,
LolYangccool.

Bonjour mon ami! Hopefully this article may help you:

http://askubuntu.com/questions/183525/h ... ve-2-4-ghz


Keep us posted!

Hello,
Thanks for this link (and for the few words in french ), I have try it but it doesn't work.
My AirPort Extrem defuse two network, one network in the 2.4GHz frequency and an other network in the 5GHz frequency.
I have understood that I need to change the 2.4GHz to the 5GHz band, is that correct ?
But, I have two network name, one named for exemple "network", this is the 2.4GHz network and the second network is named "network 5GHz", this is the... 5GHz network.

I don't know if I can to have two frequency with just one name.

Any ideas ?

Thanks you for approved my topic.

Hi even this from that same link>:

Run:
$ iwlist wlan0 scanning | grep -C3 <name of your network>

You should find 2 entries for the network, for example:
Cell XX - Address: 11:11:11:11:11:11 // This will be different in your machine
ESSID: "name of your network" // This will be different on your machine
Protocol: IEEE 802.11bgn
Mode: Master
Frequency: 2.437 Ghz

--

Cell XX - Address: 22:22:22:22:22:22 // This will be different on your machine
ESSID: "name of your network // This will be different on your machine
Protocol: IEEE 802.11AC
Mode: Master
Frequency: 5.18 Ghz
BSSID for the 5Ghz Network, in this example: 22:22:22:22:22:22
BSSID for the 2.4 Ghz Network, in this example: 11:11:11:11:11:11

Now what you do is:
click on 'Network Connections'
'Edit Connections...'
[Select your network connection] (there could be 2 entries, any will do)
Click Edit
Go to 'Wi-Fi' or 'Wireless' Tab
Click the BSSID Dropdown
Select the BSSID Matching the 5 Ghz Network (22:22:22:22:22:22 in this example)
Switch to the 'General Tab'
Make sure to check the checkbox that is labeled: 'Automatically connect to this network when it is available'
Rename the Connection to 'your network name'_AC
Click Save
If there were 2 entries for 'your network name' in your Network Connections list, proceed with next step, otherwise go to the last step.
Click on the other 'your network name' entry
Click Edit
Go to 'Wi-Fi' or 'Wireless' Tab
Click the BSSID Dropdown
Select the BSSID Matching the 2.4 Ghz Network (11:11:11:11:11:11 in this example)
Switch to the 'General' Tab
Uncheck the checkbox that is labeled: 'Automatically connect to this network when it is available'
Set the 'Connection name' to [your network name]_N
Click Save...
Disconnect from your network and re-connect

You should now be connected to the 5Ghz network, and you would have to explicitly do the opposite process in order to connect to the 2.4 Ghz Network.shareimprove this answer edited Jun 2 at 12:54
answered Jun 2 at 12:48

[by Marcel Valdez Orozco] half-way down the page.

Hi,

see answer 2 here which may help:

http://superuser.com/questions/774256/h ... ultaneousl

Bon chance!.

Hi, you can also have a look here http://ubuntuforums.org/showthread.php?t=1480154 - and http://ubuntuforums.org/showthread.php?t=1190239 - the last link see comment #5 - Do you have the airport-utils installed? That might help the situation...