Ubuntu – Can’t view wifi signal strength with iwconfig or wavemon


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?


Best Answer

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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