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I have Ubuntu 12.04 (WUBI) on my Toshiba Satellite. I have a Realtek RTL8188E Wireless LAN 802.11n. The internet works fine when I plug it in using a ethernet cable, but my laptop doesn't even search for wifi. I have Windows 7 and my wifi works fine. How do I make my wireless internet work?

$ lspci -nn | grep 0280 
Realtek Semiconductor Co., Ltd. RTL8188EE Wireless Network Adapter [10ec:8179] (rev 01)
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I mean that I dual boot with Windows 7 and the wireless internet works fine on it. – Austin Dec 31 '13 at 4:11
Please edit your question to add details of your wireless card from the terminal command: lspci -nn | grep 0280 – chili555 Dec 31 '13 at 13:43

Please get a temporary wired ethernet connection and do:

sudo apt-get install linux-headers-generic build-essential

I suggest you download this to your desktop: Right-click it and select 'Extract Here.' Now open a terminal and do:

cd ~/Desktop/backports-3.12.2-1/
make defconfig-rtlwifi
sudo make install
sudo modprobe rtl8188ee

Your wireless should now be working. You will have compiled the driver for your currently running kernel only. When Update Manager installs a later linux-image, after reboot, re-compile:

cd ~/Desktop/backports-3.12.2-1/
make clean
make defconfig-rtlwifi
sudo make install
sudo modprobe rtl8188ee

If the message logs say you need firmware:

dmesg | grep rtl

Download and install it with:

sudo dpkg -i linux*.deb 
sudo modprobe -r rtl8188ee && sudo modprobe rtl8188ee
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Thank you it worked! – Austin Jan 2 '14 at 5:29
I had to go through all of the firmware stuff, but eventually got it to work on Debian 7 as well. Thank you! – Chris Feb 21 '14 at 6:18
doesn't work... – MathCubes Aug 17 '14 at 7:42
@Andrew What kernel version are you running? uname -r – chili555 Aug 17 '14 at 12:28 humm it is unstable. – MathCubes Aug 17 '14 at 19:13

First time that I tried, I got this message:

CONFIG_X86_X32 enabled but no binutils support

Well, I'm brazilian and here Ubuntu calls "desktop" as "Área de trabalho" (with spaces and acute) and the answer to this question saved me.

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