Ubuntu – Realtek 8188cus doesn’t work

driversrealtekwireless

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

Best Answer

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.}

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Ubuntu – Realtek RTL8111E8168B Ethernet driver doesn’t work

This is a short guide to fix the problem concerning the following network chipset.

Ethernet controller: RealTek Semiconductor Co., Ltd RTL8111/8168B PCI Express Gigabit Ethernet Controller (rev 02)

Symptom

The networkcard fails to work properly while using the driver supplied in the kernel. NIC crashes seems to occure while transfering files above 100mbps however the problem sometimes occure during lower transfer rates too. The system itself doesnt crash and it can still be managed locally however all networkbased communication goes down. To fix this you can reboot the computer however its not an substantial solution its just a question of time unstil the NIC goes down again. Therefor you have to install the latest driver.

Solution/Fix | Download and apply the latest driver.

Install the kernel headers.

sudo apt-get install linux-headers-$(uname -r)

Install Build Essential.

sudo aptitude install build-essential

Download a driver for the appropriate kernel.

wget http://www.realtek.com/downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5&Conn=4&DownTypeID=3&GetDown=false#2

this one : LINUX driver for kernel 2.6.x and 2.4.x (Support x86 and 64) 8.020.00 2010/11/15 55k

Extract the file and change directory.

tar xvfs r8168-8.018.00.tar.bz2
r8168-8.018.00/
r8168-8.018.00/Makefile
r8168-8.018.00/README
r8168-8.018.00/src/
r8168-8.018.00/src/rtl_eeprom.h
r8168-8.018.00/src/Makefile
r8168-8.018.00/src/r8168_asf.c
r8168-8.018.00/src/r8168.h
r8168-8.018.00/src/rtl_eeprom.c
r8168-8.018.00/src/r8168_asf.h
r8168-8.018.00/src/rtltool.h
r8168-8.018.00/src/r8168_n.c
r8168-8.018.00/src/Makefile_linux24x
r8168-8.018.00/autorun.sh

Change directory.

cd r8168-8.018.00/

Start the installation.

sudo ./autorun.sh
/home/goopen/r8168-8.018.00/src/r8168_n.c: In function 'rtl8168_get_ethool_stats' :
/home/goopen/r8168-8.018.00/src/r8168_n.c: 1745:2: warning: 'DMA_nnBIT_MASK' deprecated
/home/goopen/r8168-8.018.00/src/r8168_n.c: In function 'rtl8168_init_board' :
/home/goopen/r8168-8.018.00/src/r8168_n.c: 6517:6 warning: 'DMA_nnBIT_MASK' is deprecated
/home/goopen/r8168-8.018.00/src/r8168_n.c: 6520:3 warning: 'DMA_nnBIT_MASK' is deprecated
/home/goopen/r8168-8.018.00/src/r8168_n.c: In function 'rtl8168_hw_start' :
/home/goopen/r8168-8.018.00/src/r8168_n.c: 7096:2: warning: 'DMA_nnBIT_MASK' is deprecated
/home/goopen/r8168-8.018.00/src/r8168_n.c: 7098:2: warning: 'DMA_nnBIT_MASK' is deprecated
/home/goopen/r8168-8.018.00/src/r8168_n.c: In function 'rtl_get_eeprom' :
/home/goopen/r8168-8.018.00/src/r8168_n.c: 1794:10: warning: 'ret' may be used uninitialized in this function.
Depending module. Please wait.
load module r8168
Completed.

Now reboot your computer and it should be working again.

sudo reboot

Ubuntu – Problem in Ubuntu 12.04 with TL-WN823N

sudo modprobe rtl8192cu

Also, you probably have to take your driver off of the blacklist in order for it to work. If you are trying to blacklist the kernel driver but have successfully installed the Realtek version it should not be an issue. I have installed Realtek drivers in the past and the Realtek driver will typically overide or install over the kernel version just as a newer version would during an update. I would try commenting out those three lines you added earlier before doing a reboot to see if that works. BTW, you need all three of those ones you blacklisted in order for rtl8192cu to work. (rtl8192cu rtlwifi and rtl8192c_common) They all depend on each other and need to be taken off of the blacklist. After you remove the blacklisted items and reboot.

Now you have to assign the driver to the usb device. So plug the device in.

First, find out the code you need for the following steps. I performed the following for the code '2001 330D'. All you need to do is replace your code for '2001 330D' if your output of lsusb is different.

lsusb

you should see something like this . . .

...
Bus 002 Device 020: ID 2001:330d D-Link Corp.

This would indicate your ID is 2001 330D. Again, if your's is different, substitute the correct value in the following commands.

sudo modprobe rtl8192cu
echo "2001 330D" | sudo tee /sys/bus/usb/drivers/rtl8192cu/new_id

To get the driver to load at boot . . .

sudo gedit /etc/modules

and add the line

rtl8192cu

Save and exit.

sudo gedit /etc/rc.local

and add the following

# Declare USB ID to rtl8192cu module
echo "2001 330D" | tee /sys/bus/usb/drivers/rtl8192cu/new_id

exit 0

Best Answer

You're done.

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Ubuntu – Realtek RTL8111E8168B Ethernet driver doesn’t work

Ubuntu – Problem in Ubuntu 12.04 with TL-WN823N

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