1. Initial Considerations.
Before you check for the cause of a non-functioning wireless card (WiFi) please check that:
- The wireless LAN (WiFi) function is properly activated via the hardware switch/slider (often on one side of the laptop) or via a function key on the computer keyboard,
- There is a wireless card (WiFi) installed (often we get laptop donations without a wireless card), see below Check which WiFi chip is installed and check the manufacturer name. In case there is no WiFi card installed you can add one or use a connection via LAN (cable).
Sometimes older or very new WiFi Cards are not recognized automatically. The following check list provides a set of steps that you can try to fix this situation.
2. Check list.
- Check if specific drivers are needed
- Check which WiFi chip is installed and check the manufacturer name
- Check if the Broadcom WiFi chip is not detected
- Try installing Linux Backport Modules
- Try installing NdisWrapper
- the 32 Bit or 64 Bit driver of the WiFi card matches with your Lubuntu version (32 or 64 Bit)
- the .inf file of the driver is enclosed, e.g. Intel encloses .inf only in the .zip version, not enclosed in the .exe!
- Try installing the native WiFi driver of the manufacturer.
Preferences → Software & Updates → Additional Drivers → wait a while
→ either "no additional drivers available" is hown → no further action should be needed, or
→ a list of availble drivers is shown → click the driver you want to use → Apply Changes
Open a terminal and execute:
lspci | grep -i net (enter)
to show chip set and manufacturer:
lspci -nnk | grep -i net -A2 (enter)
or in case of using an USB Wifi stick:
Note: Some build-in WiFi cards are recognized as an external USB, so if in doubt try also these commands.
To check if your WiFi card is supported:
If your WiFi card is based on the Broadcom chip set you are able to install:
sudo apt-get update (enter)
sudo apt-get install firmware-b43-installer (enter)
After rebooting the system it should work. If not activate the driver by hand:
sudo modprobe -r b43 bcma (enter)
Linux Backport Modules can be installed to get support for many older Wifi cards. The Backport Modules are already part of Labdoo Image for Cloning and installscript-software.sh.
A detailed list of the supported WiFi cards can be found here:
To install execute in a terminal:
for Lubuntu 12.04:
sudo apt-get install linux-backports-modules-cw-3.6-$(uname -r) (Enter)
for Lubuntu 10.04:
sudo apt-get install linux-backports-modules-wireless-$(uname -r) (Enter)
and for all Lubuntu versions:
sudo apt-get install linux-firmware-nonfree (Enter)
If it does not work you can try:
Details at: http://wiki.ubuntuusers.de/WLAN/NdisWrapper
Please check, if
Follow the instruction in the upper Wiki (please add here an English Wiki link).
If this does not work try:
Please search in web for more information.
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acer - special keys are not detected
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Installation of VirtualBox