realtek 8188cus doesn't work

Question

I'm new to Ubuntu, very new, and doesn't really know if what I'm doing is correct.

I installed Ubuntu 13.10 5 days ago, my tplink tl-wn723n wifi usb adapter connects to the wifi router but keeps asking for the password, searched google and found out it's a bug, my tplink is version 2 so that means it has rtl8188cus.

so far, what I've tried are:

blacklisting certain modules, I'm not sure if I did it correctly: to /etc/modprobe.d/blacklist.conf I added:

# Blacklist native realtek 8188cus drivers
blacklist rtl8192c
blacklist rtl8192c_common
blacklist rtlwifi

downloaded the driver from realtek, for 8188cus, extracted it, then ran sudo bash install.sh. after restarting, I don't get wifi on my network anymore.

I also tried doing the rtl8192cu-tjp-dkms_1.6_all made by tim, at some point. I was able to install this, but now, when I try to, it won't. It would say:

Dependency is not satisfiable: dkms (>= 1.95)

please help, i may need noob instructions todo this

Answer 1

First of all, ensure you have the necessary prerequisites:

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

Clone the updated driver with git:

git clone https://github.com/pvaret/rtl8192cu-fixes.git

Set it up as a DKMS module:

sudo dkms add ./rtl8192cu-fixes

Build and install the driver, you may need check the version here (e.g. 1.9 may change):

sudo dkms install 8192cu/1.9

Refresh the module list:

sudo depmod -a

Ensure the native (and broken) kernel driver is blacklisted:

sudo cp ./rtl8192cu-fixes/blacklist-native-rtl8192.conf /etc/modprobe.d/

Let's not take any chances. Instruct Ubuntu to load the new driver when it starts up.

echo 8192cu | sudo tee -a /etc/modules

Reboot.

You're done.

_{Thanks to P. Varet for this awesome fix.}