Windows 10 realtek rtc 8192eu driver download - are not
We get a lot of posts regarding issues with WiFi, so I've decided to write up a quick troubleshooting guide.
NOTE THIS WAS WRITTEN IN 2013 LONG BEFORE PI's WITH INTEGRATED WIFI EXISTED, AND MANY OS VERSIONS AGO, IT ONLY ADDRESSES EXTERNAL USB DONGLES AND AS SUCH IT MIGHT SOON BE RETIRED AS A STICKY!
1) Check whether the WiFi stick is being picked up at all
Run a 'lsusb' in a terminal and you should see your WiFi stick in the output of the command.If you can see it, it means that at least the stick is most likely working.
If you can't see it, then the stick is not being picked up.
If you're using a powered hub, try the stick in another computer
If you're NOT using a powered hub, try a powered hub first.
2) Check whether the modules loaded
Run a lsmod and see if the module for the stick is loaded. The module name will change depending on the stick that is being used. For example, if you have the above RTL8188CUS WiFi adapter, then lsmod will show the following output (notice the 8192cu module is loaded):For RT5370 sticks, you'll see a rt2800usb module in there instead.
If the module is there, then the drivers are being loaded correctly.
3) Check the WiFi NIC
Since the stick is there and drivers are loaded, check to make sure the stick is definitely being picked up
Run an ifconfig -aand check the output. You should see a 'wlan0' in the output, similar to this:If you do not see this not then you may be missing some firmware for your device.
The firmware packages for the more common devices are as follows:
firmware-ralink for Ralink devices (RT5370/RT3070/etc.)
firmware-realtek for Realtek devices (RTL8188CUS/etc.)
firmware-atheros for Atheros devices.
apt-get install <firmware-package> will install the firmware on Raspbian.
Once you've installed the firmware, unplug and plug the stick back in to see if ifconfig -acan see it now.
If not, try a reboot as well.
4) Check the WiFi configuration
This is where it starts getting complicated.
If you can see wlan0 when you run ifconfig -abut you can't get online, you'll need to make sure the adapter is getting an IP address, and is connected to a WiFi Network.
For Raspbian:
Check /etc/network/interfaces and ensure that you have the WiFi details configured.
This can be done in either the interfaces file, or it can be linked to another file via the wpa-roam or wpa-conf parameters in /etc/network/interfaces
Verify the details for the network are correct, SSID and PSK need to be exactly right for the WiFi NIC to connect to a network.
If you have changed the details, run sudo ifdown wlan0 && sudo ifup wlan0to use the new settings.
These settings will be applied when the WiFi starts up.
4a) WiFi Not Connecting on Startup
If the WiFi works when you run ifup wlan0, but doesn't come up when you reboot the Pi, we'll need to check the file /etc/network/interfaces again.
Look for any lines that have auto at the beginning, and see if you see one that has 'auto wlan0'.
If not, then add that line in. This line directs the Pi to connect to bring up the WiFi NIC automatically, which in turns triggers the WiFi NIC to connect to the WiFi network.
4b) How do I configure the WiFi Settings
By default, Raspbian has in /etc/network/interfaces this line:The contents of the file should look something like this: If it doesn't, or if it has the wrong details, updating the details here will let the WiFi Adapter connect.
4c) How do I configure WiFi to use a Static IP address
In /etc/network/interfaces, there should be these linesTo make it use a static IP address, we need to add a few lines, and change dhcp to static, and then it should look like this: That block will bring up wlan0 on startup, connect to the WiFi network that's detailed in wpa_supplicant.conf, and set an address of 10.1.1.2
4d) Make Sure The WiFi Network Can Be Detected[/size]
If the Pi still won't connect, make sure the Pi is actually seeing the WiFi Network
This can be done with the wpa_cli command, but this needs to be run as rootThat should show a list of available WiFi networks, and if yours isn't on the list, then you may need to adjust the location of the Pi or the WiFi router.
Once you've gone through all of these steps, you should be able to get online!
NOTE THIS WAS WRITTEN IN 2013 LONG BEFORE PI's WITH INTEGRATED WIFI EXISTED, AND MANY OS VERSIONS AGO, IT ONLY ADDRESSES EXTERNAL USB DONGLES AND AS SUCH IT MIGHT SOON BE RETIRED AS A STICKY!
1) Check whether the WiFi stick is being picked up at all
Run a 'lsusb' in a terminal and you should see your WiFi stick in the output of the command.
Code: Select all
If you can't see it, then the stick is not being picked up.
If you're using a powered hub, try the stick in another computer
If you're NOT using a powered hub, try a powered hub first.
2) Check whether the modules loaded
Run a lsmod and see if the module for the stick is loaded. The module name will change depending on the stick that is being used. For example, if you have the above RTL8188CUS WiFi adapter, then lsmod will show the following output (notice the 8192cu module is loaded):
Code: Select all
If the module is there, then the drivers are being loaded correctly.
3) Check the WiFi NIC
Since the stick is there and drivers are loaded, check to make sure the stick is definitely being picked up
Run an ifconfig -aand check the output. You should see a 'wlan0' in the output, similar to this:
Code: Select all
The firmware packages for the more common devices are as follows:
firmware-ralink for Ralink devices (RT5370/RT3070/etc.)
firmware-realtek for Realtek devices (RTL8188CUS/etc.)
firmware-atheros for Atheros devices.
apt-get install <firmware-package> will install the firmware on Raspbian.
Once you've installed the firmware, unplug and plug the stick back in to see if ifconfig -acan see it now.
If not, try a reboot as well.
4) Check the WiFi configuration
This is where it starts getting complicated.
If you can see wlan0 when you run ifconfig -abut you can't get online, you'll need to make sure the adapter is getting an IP address, and is connected to a WiFi Network.
For Raspbian:
Check /etc/network/interfaces and ensure that you have the WiFi details configured.
This can be done in either the interfaces file, or it can be linked to another file via the wpa-roam or wpa-conf parameters in /etc/network/interfaces
Verify the details for the network are correct, SSID and PSK need to be exactly right for the WiFi NIC to connect to a network.
If you have changed the details, run sudo ifdown wlan0 && sudo ifup wlan0to use the new settings.
These settings will be applied when the WiFi starts up.
4a) WiFi Not Connecting on Startup
If the WiFi works when you run ifup wlan0, but doesn't come up when you reboot the Pi, we'll need to check the file /etc/network/interfaces again.
Look for any lines that have auto at the beginning, and see if you see one that has 'auto wlan0'.
If not, then add that line in. This line directs the Pi to connect to bring up the WiFi NIC automatically, which in turns triggers the WiFi NIC to connect to the WiFi network.
4b) How do I configure the WiFi Settings
By default, Raspbian has in /etc/network/interfaces this line:
Code: Select all
Code: Select all
4c) How do I configure WiFi to use a Static IP address
In /etc/network/interfaces, there should be these lines
Code: Select all
Code: Select all
4d) Make Sure The WiFi Network Can Be Detected[/size]
If the Pi still won't connect, make sure the Pi is actually seeing the WiFi Network
This can be done with the wpa_cli command, but this needs to be run as root
Code: Select all
Once you've gone through all of these steps, you should be able to get online!
Last edited by SirLagz on Thu Jan 02, 2014 8:23 am, edited 9 times in total.
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WiFi Issues ? Have a look at this post ! http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=44044
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