Wifi video

[Luke269]

Hi, does anyone have or know of a video on the setup of a wifi adapter on the r-pi as I am struggling to understand the instructions

[geezbeez]

1) plug in your usb wifi dongle

you can type lsusb to see if the usb device is detected.

lsusb

you can type iwconfig or ifconfig and should see wlan0 has appeared.

iwconfig

you can next see if your pi is picking up any available wifi networks by typing

sudo iwlist scan

If you get this I doubt any videos will help you

lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
wlan0 No scan results

If you see available wifi networks though, your well on your way , look for the videos

[geezbeez]

uh, missed lsmod,


lsusb will list the devices installed
Bus 001 Device 004: ID 0846:4260 NetGear, Inc. WG111v3 54 Mbps Wireless [realtek RTL8187B]
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp.
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


lsmod will list the modules installed (the driver software)
lsmod,
Module Size Used by
ipv6 290227 18
fuse 73593 1
arc4 1319 2
rtl8187 50761 0
mac80211 253889 1 rtl8187
cfg80211 180459 2 rtl8187,mac80211
eeprom_93cx6 1643 1 rtl8187
spi_bcm2708 4815 0
i2c_bcm2708 3818 0

If you don't have the software for the device you can search for it
For me as my wifi dongle is same as example
sudo apt-cache search RTL818
only that does not seem to work !!!!!
sudo apt-cache search Realtec
firmware-realtek - Binary firmware for Realtek wired and wireless network adapters

so

sudo apt-get install firmware-realtek

followed by lsmod to check you got the firmware

and

sudo iwlist scan

but all I get is
.
.
.
.
.
wlan0 No scan results

I think its because I have a
realtek RTL8187B