RTL8188CUS in-kernel driver not working.

xaos52 · 2012-05-10 13:25:44

The in-kernel driver is reported not to be working on an AirLink101 AWLL5088 Wireless N 150 Ultra Mini USB Adapter.

lsusb:
Bus 001 Device 002: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN

The in-kernel driver for this card is rtl8192cu
It is reported not to be working in Statler and Waldorf.

Proposed solution:
------------------------

Status: Still not workable on 3.2.0-0.bpo.2-amd64 - works on 3.2.0-0.bpo.1-amd64

Download and install the proprietory driver from www.realtek.com
Search for 'rtl8188CUS'
Click on RTL8188CUS (Software)
In the table titled 'Unix (Linux)' click on one of the sites closest to your location.
The download should start after a couple of seconds and should put the file

RTL819xCU_USB_linux_v3.4.2_3727.20120404.zip

in your download folder.

Now for the preliminaries: Install the kernel sources and the requisites for a kernel compilation:

sudo apt-get install module-assistant
sudo m-a prepare

After that we are ready to compile the kernel module

in a terminal window:

cd to your download directory
unzip the zipped archive:

unzip RTL[Tab]

Do not type [Tab], just press the tab key and the directory name will be auto-completed

cd RTL8188[Tab]
sudo bash -vx ./install.sh 2>&1 | tee ../install.log

This will start the install procedure and store the log in the parent directory.

You will be asked what card type you have:

Please select card type(1/2):
1) RTL8192cu
2) RTL8192du

Select 1

If you do not see the message The Setup Script is completed ! then something went wrong.
Post the content of the install.log file on the forum, and do not continue.

The smart ones amongst you will have noticed that the proprietory driver name is '8192cu', whereas the in-kernel driver is 'rtl8192cu'.

We will have to blacklist the in-kernel driver to avoid conflict:

In a terminal window, type

echo "blacklist rtl8192cu" | sudo tee >/etc/modprobe.d/realtek.conf

sudo depmod -a 
sudo update-initramfs -u

Now reboot.
Your wireless should work now.

Last edited by xaos52 (2012-05-12 15:23:31)

weredawg · 2012-05-10 16:38:54

I really appreciate this thread.
HOWEVER, I get stuck at this

greg@waldorf:~/downloads/RTL8188C_8192C_8192D_USB_linux_v3.4.5_3727.20120404$ sudo ./install.sh 2>&1 | tee ../install.log
sudo: ./install.sh: command not found

Everything else up to this point has worked

UPDATE: Fixed it! Had to go to the install.sh's permissions and check it so that it could be executed. My derp.

UPDATE 2: IT LIVES! big_smile

Thank you so very much.

Last edited by weredawg (2012-05-10 16:56:30)

el_koraco · 2012-05-10 16:45:18

Your Atheros driver can't connect to wireless networks on kernel upgrade

Atheros ships two models of drivers, ath9k and ath5k, which are fully free software and built into the kernel. No firmware is needed. Once in a while, a hardware encryption bug crops up. You can mostly avoid the problem by reverting from WEP to WPA encryption, which is also much safer.

If that isn't an option, you can make a file named /etc/modprobe.d/ath.conf and paste this in

options ath9k nohwcrypt=1

and reload the driver:

sudo modprobe -r ath9k
sudo modprobe ath9k

Replace ath9k with ath5k is lspci reports you have that particular driver.

pvsage · 2012-05-10 16:46:12

xaos52 wrote:

The in-kernel driver for this card is rtl8192cu

You will be asked what card type you have:
Please select card type(1/2):
1) RTL8192cu
2) RTL8192du
Select 2

I think I might see a small error here... wink

weredawg · 2012-05-10 17:04:59

pvsage wrote:

xaos52 wrote:
The in-kernel driver for this card is rtl8192cu
You will be asked what card type you have:
Please select card type(1/2):
1) RTL8192cu
2) RTL8192du
Select 2
I think I might see a small error here...

I guess not? Since it worked for me (at least the first time)

I tried switching to another access point in my house but now I can't connect to either point. I enter my key correctly but after a while it just shows the prompt to enter the key again... neutral

UPDATE: After trying to switch to the other AP, my two wireless networks were no longer listed under the Wireless Networks section, though they were saved. I did fix the problem by unplugging and plugging the USB adapter back in

Last edited by weredawg (2012-05-10 17:19:23)

pvsage · 2012-05-10 18:13:45

This is with kernel 3.2.0-0.bpo.2-amd64, right? I have the same problem with that kernel; try installing 3.2.0-0.bpo.1-amd64 (make sure you grab the headers too!) and see if it works better with that.

weredawg · 2012-05-10 18:30:23

pvsage wrote:

This is with kernel 3.2.0-0.bpo.2-amd64, right? I have the same problem with that kernel; try installing 3.2.0-0.bpo.1-amd64 (make sure you grab the headers too!) and see if it works better with that.

Are you talking to me?

uname -r
3.2.0-2-686-pae

xaos52 · 2012-05-10 18:33:23

@OP:

Do the install again.
select 1 now in stead of 2.

Post output of

dmesg|grep 8192
lsmod | grep 8192

@ pvsage: Slight mistake corrected. Select 1. Thanks.

@ el_k: tis no atheros, but realtek smile

Last edited by xaos52 (2012-05-10 18:38:05)

el_koraco · 2012-05-10 18:46:27

xaos52 wrote:

@ el_k: tis no atheros, but realtek

I was sure this was a tips&tricks how to handle various wireless problems.
Burp.
Sorry big_smile

weredawg · 2012-05-10 18:54:51

xaos52 wrote:

@OP:
Do the install again.
select 1 now in stead of 2.
Post output of
dmesg|grep 8192
lsmod | grep 8192
@ pvsage: Slight mistake corrected. Select 1. Thanks.
@ el_k: tis no atheros, but realtek

Just making sure
Do the whole thing from beginning to end, and the ONLY difference is to select 1 instead of 2 right?

xaos52 · 2012-05-10 19:14:48

Yes. Start again from the install step - you dont have to download again - and select 1 now in stead of 2.

xaos52 · 2012-05-11 06:47:20

@pvsage: Have you tried this version of the driver - RTL819xCU_USB_linux_v3.4.2_3727.20120404.zip - with kernel 3.2.0-0.bpo.2-amd64?
This time I have seen no warnings at all in the compilation phase, so they must have changed something.

pvsage · 2012-05-11 06:51:33

^ Hey, the latest version is only a few days old! I'll have to try that this weekend. cool

weredawg · 2012-05-11 19:21:25

Sorry for the late update, but even after re-doing all of the steps and selecting 1, instead of 2, it's still prompting me for my key even though it's right.

Hrm, give me to time to look at this a little more. I didn't report yesterday because I was spending my day graduating.

xaos52 · 2012-05-11 19:35:42

No problem smile
Can you take a picture of the screen asking for your key, or give me the exact wording. Perhaps it is asking for the password to unlock your gnome-keyring?

weredawg · 2012-05-11 21:13:09

Ok, turned on the laptop, and it automatically connected to my main router no problem (I initially had it establish a connection with the wireless repeater I had)

Dunno, it "works" just kinda random.

Thanks again xaos52

UPDATE:
NOPE. It lost my repeater, even though I was connected to my main router I was not getting any Intenet though my other devices are working fine with the router (Internet is up) and now it started it again.

Can't really attach the screenshot at the moment but it's a dialog box called "Wireless Network Authentication Required"
Options are to type in the password, whether or not to show the password, and Cancel and Connect buttons. This just keeps popping up. The password is not wrong either.

Last edited by weredawg (2012-05-11 21:23:29)

pvsage · 2012-05-12 06:34:10

Well, I tried the latest version of the script with 3.2.0-0.bpo.2-amd64. Still got the "cast from/to pointer to/from integer of different size" warnings. (By the way, you forgot that, if your extract directory is on an ext2/3/4 partition, you need to chmod +x. wink ) At any rate, the latest build works; posting from bpo.2 now.

xaos52 · 2012-05-12 10:13:05

OK. Good news.
Actually I ran the install thus:

sudo bash -vx ./install.sh

Thats why I did not notice the execute bit was off.

I ran it from a 'sid' install and had no warnings at all.

pvsage · 2012-05-12 15:04:15

I regret that I need to backpedal a bit - wifi is still spotty with the bpo.2 kernel, even with the latest build of the blob; back to bpo.1.

As for the warnings, this clearly has to have something to do with the backported kernel headeers.

xaos52 · 2012-05-12 15:17:54

Ah. I will update the status again. Worth a try though.
Concerning the warnings - either that or the compiler version.

Last edited by xaos52 (2012-05-12 15:22:32)

weredawg · 2012-05-13 23:34:33

Should I just buy another wireless adapter? Which one works? I prefer mini USB, don't mind having to use a mPCI (Intel most likely) it's just that I don't like the idea of tearing my ThinkPad open to install it. Or even a wireless card for the express slot?
Again, this is for a ThinkPad T41.
I mean the one I got was only $10, so not a big loss, plus I can use it with another PC (or whatever)

xaos52 · 2012-05-14 09:01:23

Intel generally is OK, but sometimes it is hard to tell.
What is important is the chipset, and often that is not even mentioned.

weredawg · 2012-05-14 18:00:15

Surely I'm not the only one running CrunchBang with a wireless adapter of some sort. I'll look around on the forums.

CrunchBang Linux

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#1 2012-05-10 13:25:44

RTL8188CUS in-kernel driver not working.

#2 2012-05-10 16:38:54

Re: RTL8188CUS in-kernel driver not working.

#3 2012-05-10 16:45:18

Re: RTL8188CUS in-kernel driver not working.

#4 2012-05-10 16:46:12

Re: RTL8188CUS in-kernel driver not working.

#5 2012-05-10 17:04:59

Re: RTL8188CUS in-kernel driver not working.

#6 2012-05-10 18:13:45

Re: RTL8188CUS in-kernel driver not working.

#7 2012-05-10 18:30:23

Re: RTL8188CUS in-kernel driver not working.

#8 2012-05-10 18:33:23

Re: RTL8188CUS in-kernel driver not working.

#9 2012-05-10 18:46:27

Re: RTL8188CUS in-kernel driver not working.

#10 2012-05-10 18:54:51

Re: RTL8188CUS in-kernel driver not working.

#11 2012-05-10 19:14:48

Re: RTL8188CUS in-kernel driver not working.

#12 2012-05-11 06:47:20

Re: RTL8188CUS in-kernel driver not working.

#13 2012-05-11 06:51:33

Re: RTL8188CUS in-kernel driver not working.

#14 2012-05-11 19:21:25

Re: RTL8188CUS in-kernel driver not working.

#15 2012-05-11 19:35:42

Re: RTL8188CUS in-kernel driver not working.

#16 2012-05-11 21:13:09

Re: RTL8188CUS in-kernel driver not working.

#17 2012-05-12 06:34:10

Re: RTL8188CUS in-kernel driver not working.

#18 2012-05-12 10:13:05

Re: RTL8188CUS in-kernel driver not working.

#19 2012-05-12 15:04:15

Re: RTL8188CUS in-kernel driver not working.

#20 2012-05-12 15:17:54

Re: RTL8188CUS in-kernel driver not working.

#21 2012-05-13 23:34:33

Re: RTL8188CUS in-kernel driver not working.

#22 2012-05-14 09:01:23

Re: RTL8188CUS in-kernel driver not working.

#23 2012-05-14 18:00:15

Re: RTL8188CUS in-kernel driver not working.

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