My boss wanted me to install Raspbian through raspbian ua net install, instead of through NOOBs. It just got done installed a base-level Raspbain from sources files and its LXDE gui.

However, I have a Wi-Pi adapter plugged in and there is no wireless connection. The Gui says that "device is not ready (firmware missing)".

Also I tried to run lspci and it came back with

 pcilub: Cannot open /proc/bus/pci
 lspci: Cannot find any working access method
  • 1
    There is no PCI bus on the pi. Those are USB jacks. Try lsusb (you may need to install usbutils).
    – goldilocks
    Oct 20, 2015 at 0:14

1 Answer 1


Before continuing with this answer, type the command lsusb and make sure the adapter is listed.

Sometimes the RPi does not recognize Wi-fi adapters in the GUI, but this doesn't mean you cannot use them. You will just have to edit system files manually instead.

So, first edit your wpa_supplicant file be entering the command

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

then, add this to the bottom:


Obviously, you need to replace "NETWORK" your your network name and "PASS" with your network's password.

Finally, edit your interfaces file by typing the command:

sudo nano /etc/network/interfaces

And, if this isn't already there, add this:

allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

Reboot the Pi and it should connect to your network.

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