I have been reading everywhere that I should be able to view wifi signal strength using iwconfig or wavemon but I am not getting that information when I use either of them. I can connect to wifi, and the signal strength icon with the bars in gnome3 works fine, but I want more specific information.

Here is what happens when I use iwconfig:

lo        no wireless extensions.

eth1      IEEE 802.11abg  ESSID:"WIFI_ROUTER"  
          Mode:Managed  Frequency:2.437 GHz  Access Point: 82:0C:E5:2V:7E:48   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

eth0      no wireless extensions.

When using wavemon I get mostly the same info but in the Levels area, it says NO INTERFACE DATA. I assume this is where I should be able to view the signal strength.

What can I do to make the signal strength show up?


  • Looks like I needed to sudo those commands, works now with sudo iwconfig or sudo wavemon – user164626 Jun 5 '13 at 11:08
  • Don't forget to answer your own question and mark it as the accepted answer once you're able to. That way, people searching for a similar issue can easily see the answer. – Alaa Ali Jun 5 '13 at 11:41

You should use sudo. In case of iwconfig you can do sudo watch -n 1 iwconfig to see all the details every second. You will see an output like this

In case of wavemon do sudo wavemon and the output will be like.enter image description here

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