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I'm using Raspberry Pi 3 Model B Rev 1.2 with Raspbian Stretch installed. I can't use the on board WiFi adapter. Clicking on the WiFi icon on the task bar shows 'No wireless interfaces found'.

sudo ifup wlan0" shows "ifup: unknown interface wlan0".

Running the ifconfig and ifconfig -a commands and "sudo nano /etc/network/interfaces" shows the following.

output of ifconfig and ifconfig -a

contents of /etc/network/interfaces

I noticed that in RPi B+ model running on a fresh install of Raspbian Stretch OS , I can use WiFi. But I cannot do the same on a RPi B model with a fresh install of Stretch. This happens on other B+ and B model devices as well.

  • I am trying to connect my phone's hotspot. I added the ssid and pass in the etc/wpa_supplicant/wpa_supplicant.conf file. I can't search for available networks. – maheshmt Mar 29 at 15:48
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    Do not post images post text – Milliways Mar 29 at 21:35
  • you're using rasbian stretch ... don't mess with /etc/network/ – Jaromanda X Mar 30 at 1:30
  • Use sudo raspi-config go to network, wifi, and set things up there - if that doesn't work, then the only question remaining is, do you have an 2.4GHz wifi access points? – Jaromanda X Mar 30 at 1:31
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    have you set up country code? – Jaromanda X Apr 4 at 20:30

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