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iwconfig is not working

Posted: Sat Feb 15, 2020 4:13 am
by sandipgeo
I have tried to switch off the wifi from Raspberry pi 3B board, So I have used the code

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sudo iwconfig wlan0 txpower off
, so the wifi stopped. But after some time when I tried to take it back with

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sudo iwconfig wlan0 txpower on
, it does not work. The error message shows

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Error for wireless request "Set Tx Power" (8B27) :
    GET failed on device wlan0 ; Input/output error.
Now how can I get back wifi?