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Old 01-26-2013, 08:56 PM   #1
cruzdelsur
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Wiress connection not detected under Ubuntu 12.04


Hi guys,

I have this problem: my Ubuntu 12.04 doesn't not recognyze any wireless networks. I don't know what to do. I've been searching and it seems to be a regular problem for other users, and I tried some of the solutions they've got, but they didn't work for me.
I have installed Window 7 too and the wifi do works with it, so I assume that the card it's not failing.
I'm using a 32bit Toshiba Satellite.
I've checked for Additional Drivers, and the Broadcom STA wireless driver is installed and activated and it says that it's being used. But I cannot see any networks. I can only connect through wired network.

lspci |grep Network output:

Code:
lspci |grep Network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)

The lspci -vvnn says this:
Code:
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter [10ec:8176] (rev 01)
	Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:8211]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 18
	Region 0: I/O ports at 3000 [size=256]
	Region 2: Memory at c0500000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel modules: wl, rtl8192ce
Please, can anyone help me with this issue?
 
Old 01-26-2013, 09:06 PM   #2
rokytnji
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It's not a Broadcom chip

Quote:
Realtek
post output of

Code:
sudo ifconfig -a
 
Old 01-26-2013, 11:02 PM   #3
cruzdelsur
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Ok, here it is:

eth0 Link encap:Ethernet direcciónHW 04:7d:7b:a7:46:e9
ACTIVO DIFUSIÓN MULTICAST MTU:1500 Métrica:1
Paquetes RX:49 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:87 errores:0 perdidos:0 overruns:0 carrier:6
colisiones:0 long.colaTX:1000
Bytes RX:34206 (34.2 KB) TX bytes:12180 (12.1 KB)
Interrupción:44

lo Link encap:Bucle local
Direc. inet:127.0.0.1 Másc:255.0.0.0
Dirección inet6: ::1/128 Alcance:Anfitrión
ACTIVO BUCLE FUNCIONANDO MTU:16436 Métrica:1
Paquetes RX:739 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:739 errores:0 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:0
Bytes RX:57022 (57.0 KB) TX bytes:57022 (57.0 KB)
 
Old 01-27-2013, 01:30 PM   #4
rokytnji
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Ok. No Wireless is showing in ifconfig -a. I don't know why you installed the wl driver alongside the realtek driver. Might be a conflict with both drivers trying to start a wireless interface.

Quote:
I've checked for Additional Drivers, and the Broadcom STA wireless driver is installed and activated and it says that it's being used
Post complete readout of

Code:
$ lspci |grep Network 
00:19.0 Ethernet controller: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02)
11:0c.0 Network controller: Ralink corp. RT2561/RT61 802.11g PCI
in case ethernet is a Broadcom chip which Ubuntu added the wl driver for whatever mysterious reason. 2 different wireless driver from different chip manufactures for a wireless chip is a wonderment and Ubuntu should not have done that IMO.
 
Old 01-27-2013, 10:51 PM   #5
cruzdelsur
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Hi rokytnji! Thanks for your reply and interest.
I don't know either why I installed the wl driver along with the Realtek. I didn't realize I did that, I think it's the one Ubuntu suggested. It's the only option I got.
Here's is the readout of lspci | grep Network

Code:
lspci | grep Network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
So... if I got two wl drivers, what can I do? can I uninstall one of them and keep the Realtek? Should it work?

Thanks again!!
 
Old 01-28-2013, 04:49 PM   #6
rokytnji
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Quote:
can I uninstall one of them and keep the Realtek? Should it work?
I guess no ethernet port shows in your lspci readout for some reason. No ethernet card I guess?

Lets blacklist wl driver first. Then reboot. Then after reboot try ifconfig -a again to see if wlan0 wireless interface shows up.

https://help.ubuntu.com/community/Br...%28Wireless%29

Quote:
Need to blacklist wl driver like this:
Code:
echo "blacklist wl" | sudo tee -a /etc/modprobe.d/blacklist.conf
Like I said. reboot after above command and see if we get a wireless interface with.

Code:
sudo ifconfig -a
 
Old 01-28-2013, 05:47 PM   #7
cruzdelsur
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OK, done.
Here is readout:

eth0 Link encap:Ethernet direcciónHW 04:7d:7b:a7:46:e9
ACTIVO DIFUSIÓN MULTICAST MTU:1500 Métrica:1
Paquetes RX:0 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:0 errores:0 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:1000
Bytes RX:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupción:44

lo Link encap:Bucle local
Direc. inet:127.0.0.1 Másc:255.0.0.0
Dirección inet6: ::1/128 Alcance:Anfitrión
ACTIVO BUCLE FUNCIONANDO MTU:16436 Métrica:1
Paquetes RX:16 errores:0 perdidos:0 overruns:0 frame:0
Paquetes TX:16 errores:0 perdidos:0 overruns:0 carrier:0
colisiones:0 long.colaTX:0
Bytes RX:1312 (1.3 KB) TX bytes:1312 (1.3 KB)

I hope it's useful!
 
Old 01-28-2013, 08:54 PM   #8
cruzdelsur
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Hi again!!

I checked the Device Manager, using windows, and I found the 2 network devices:

Atheros AR8152/8158 PCI-E Fast Ethernet Controller (NDIS 6.20)
Realtek RTL8188CE Wireless LAN 802.11n PCI-E NIC

I don't know if this is helpful....
 
Old 01-28-2013, 09:30 PM   #9
cruzdelsur
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YAYYYY!!!! I did it!!!

I went to the Realtek Website, searched for the driver, downloaded and compiled it! and it worked!!!!
Here's is the link, just in case someone need it later: http://bit.ly/TOYLEa

I'm so happy!!! Thanks rokytnji for your help!!!

best regards!
 
Old 01-29-2013, 06:33 PM   #10
rokytnji
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Glad you got it figured out. You can mark this thread as solved with thread tools above your 1st original post.

Atheros is your ethernet chip. I don't know how broadcom came into this thread.

Thanks for posting the link also that solved your problem.

Happy Trails, Rok
 
  


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