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I just recently installed 12.04 LTS on my machine. It's dual boot with Windows 7 on the other side.While on Windows I have a solid connection with full bars all day long. However, on the Ubuntu side, I have 3 out of 4 bars, and the connection is constantly dropping.It only disconnects for a second or two, but in doing so, it disconnects my VPN. So I have to monitor my wifi icon.

My machine is Toshiba Satellite L755

I tried sudo iwconfig wlan0 power off in terminal , but i get this:

Error for wireless request "Set Power Management" (8B2C) : SET failed on device wlan0 ; Operation not supported.

After going to system settings>additional hardware drivers I get "No proprietary drivers are in use on this system"

When I run sudo lspci and I get these results:

Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4)
00:1c.6 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 7 (rev b4)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a4)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
03:00.0 Ethernet controller: Qualcomm Atheros AR8152 v2.0 Fast Ethernet (rev c1)

So I downloaded latest driver from Realtek website, copied to desktop, and extracted it. In terminal i run
sudo apt-get install gcc build-essential linux-headers-generic linux-headers-$(uname -r)
for necessary dependencies. I then enter
cd ~/Desktop/rtl_92ce_92se_92de_8723ae_88ee_linux_mac80211_0012.0207.2013
make install

Command Terminal read out.At this point I get a long scroll with a few mentions of error1 and error 2. I try to reboot the computer with
sudo modprobe -v rtl8188ee
but it says it cannot be found. So I manually reboot, and nothing changes under "Additional Drivers" scan. So I can't tell if I'm not installing correctly, or if there is something else going on.

Sources I've used so far:

step by step Ubuntu 12.04 install of Realtek RTL8188CE driver

Here's what I get after entering

cd ~/Desktop/rtl_92ce_92se_92de_8723ae_88ee_linux_mac80211_0012.0207.2013

make clean 

in the terminal: Make clean prompt Ok. After following the steps in the answer provided by Chili555 below, I believe everything went smoothly. It's worth stating that after entering the

sudo modprobe rtl8192ce

command, nothing happened. So I rebooted manually. I now have all bars lit up in my wifi icon (as opposed to before, when I only had 3)

Chili555 put up a text file in the comment section below that shows what it should look like when entering the 4 lines of code in gedit. That was very helpful. Also, be mindful of where your directory is when entering a command in terminal for cleaning up download. I specified "desktop" because that's where my extracted zip was located.

EDIT: THE NEXT DAY, Well after spending the evening on Ubuntu, I found that I am still in the same boat as before. I still have not been able to fix this issue of intermittent disconnects.

share|improve this question
You can just copy&paste text from the terminal - please don't use screenshots for that. Make sure you format it properly using the <$> button in the editor toolbar. – gertvdijk Oct 6 '13 at 19:52
It works ! with sudo modprobe rtl8188ee for me. Thanks ! – user324892 Sep 8 '14 at 16:38

First, let's clean up the file from your first attempt:

cd Desktop/rtl_92ce_92se_92de_8723ae_88ee_linux_mac80211_0012.0207.2013
make clean

Now, let's modify one file:

gedit pci.h

At the top of the file,after the comment section all out lined in **, add this sequence:

#ifndef __devinit
#define __devinit
#define __devinitdata

Proofread carefully, save and close gedit. Now do:

sudo make install

Finally, I believe the driver you need is rtl8192ce and not rtl8188ee:

sudo modprobe rtl8192ce

Your wireless should now be working.

share|improve this answer
I copied and pasted the first command you have, and hit enter. I get " No rule to make target 'clean'. Stop" What am I missing? Am I misunderstanding how to enter it in command terminal? Thanks – 5th Wheel Oct 6 '13 at 19:13
Are you in the correct directory? ~/rtl_92ce_92se_92de_8723ae_88ee_linux_mac80211_0012.0207.2013 If you list the contents of the directory, do you see the Makefile?: ls – chili555 Oct 6 '13 at 19:43
Ok, I just edited my question. You're right, I had to not just copy and paste, but specify desktop. Am I on the right track? – 5th Wheel Oct 6 '13 at 19:50
Yes, indeed. Please proceed. – chili555 Oct 6 '13 at 19:51
One last thing, sorry, but I entered the code in pci.h. Just want to make sure I am entering in the right spot, as well as should I delete the 2 pieces of line that was there before? Could you have a peak at my edit? Thanks again – 5th Wheel Oct 6 '13 at 20:06

Excuse chili555, can I get help installing this but for the rtl8723ae driver? I get 2 errors and does not seems to work fine.

share|improve this answer
Have you gone to the link I posted above "ubuntu" thread. The link is in the second post by Verunda. Then click on the download link that is closest to your region. – 5th Wheel Oct 7 '13 at 20:47
I am having trouble finding the link, is it on this thread? (Sorry I am new here) *Found it, thanks I will reply back if it works. – Alejandro_JD Oct 7 '13 at 21:47
I do not find my driver, mine is rtl8723ae and it is not there. – Alejandro_JD Oct 7 '13 at 21:52
At this point you're going to have to start a NEW question. Click on " Ask Question" button in the top/right. I'll try to help you from there. But we can't use the comment section here for troubleshooting ( forum rules) – 5th Wheel Oct 7 '13 at 22:01
Ok, post is done. – Alejandro_JD Oct 7 '13 at 22:12

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