My Wireless Cannot Found The IP And I cannot Connect to Any WIFI Network

[Dr.AMA]

My Wireless Cannot Found The IP And I cannot Connect to Any WIFI Network..

But it Finde the WIFI Device in My Dell Inspiron 6400 and it put it inactive Mod When i Active it he told me "i can't find the IP Nu. "

i'm using Fedora 8


Help Plz ...

Thanks

[bbfuller]

Hello Dr.AMA

Can you run the command:

/sbin/lspci

in a terminal window.

That will give details of all the pci devices attached to your machine.

There will be one for "network" devices and one for "ethernet" devices. The network device should be your wireless interface.

Could you copy and paste back the details for that card.

If in doubt post back with both or all devices.

[stevea]

How are you attempting to connect ? What tool are you using.

If the device shows up in "ifconfig -a" then ...
Enable the NetworkManager and NetworkmanagerDispatcher services,
Left click on the sigStrength icon in the upper panel and select "connect to other network" and enter the authentication info.

[Dr.AMA]

[root@localhost ~]# /sbin/lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT
Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GM
L Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Expre
ss Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Aud
io Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (r
ev 01)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (r
ev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controll
er #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controll
er #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controll er #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controll er #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Control ler (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (re v 01)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Con troller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
03:01.1 Generic system peripheral [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSP ro Host Adapter (rev 19)
03:01.2 System peripheral: Ricoh Co Ltd Unknown device 0843 (rev 01)
03:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (re v 0a)
03:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 05)
0b:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Conne ction (rev 02)
[root@localhost ~]#

[birger]

Please check your kernel version using uname -r

The 2.6.24.3-12 kernel was very broken for us wlan users. Especially if you need WEP encryption. If you are running the -12 kernel, hook up with a wire and do a yum update.

[bbfuller]

Hello Dr.AMA

I have the same 3945ABG wireless card as you in a laptop here. I didn't actually try it with the 24.3-12 kernel as I knew there were problems with that and some wireless cards.

It has worked well with all of the other kernels though since Fedora 8 was released.

Assuming that you have one of the other kernels all should be in place for your card to work.

Could you try the commands:

su -

in a terminal to obtain root access. That is a space and a minus sign after the su and they are important. Without them you get roots rights but only within your ordinary area of operations.

With the space and minus you gain full root rights. Surprisingly enough the commands I am going to ask you to run work differently on two different laptops I have access to. One works without the 'su -' one doesn't. Therefore I specify it to make sure.

Then run:

iwconfig

Make a note of the interface detected, probably wlan0, and then run:

iwlist wlan0 scan

If the interface you find in the earlier command is not wlan0 then substitute it in the second command and post back the results.

I suppose we should have asked earlier. Are you running Fedora 8 or an earlier version?

[Dr.AMA]

Hi Every one Thanks for your Replies ,

// iwconfig gives me

lo no wireless extensions.

eth0 no wireless extensions.

wmaster0 no wireless extensions.

wlan0 IEEE 802.11g ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=27 dBm
Retry min limit:7 RTS thr:off Fragment thr=2346 B
Encryption key:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
// and iwlist wlan0 scane gives me too
wlan0 No scan results


and i check the kernel it is 2.6.23.1-42.fc8

thnks

[bbfuller]

Hello Dr.AMA

That's very odd. On my machine with a 3945ABG the results from the iwlist command look like this:

root@lenovo bbfuller]# iwlist wlan0 scan
wlan0 Scan completed :
Cell 01 - Address: **.**.**.**.**.**
ESSID:"cretaceous"
Mode:Master
Frequency:2.417 GHz (Channel 2)
Channel:2
Quality=88/100 Signal level=-45 dBm Noise level=-72 dBm
Encryption key:on
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
12 Mb/s; 24 Mb/s; 36 Mb/s; 9 Mb/s; 18 Mb/s
48 Mb/s; 54 Mb/s
Extra:tsf=000000007ce55909
Cell 02 - Address: **.**.**.**.**.**
ESSID:"Livebox-05A8"

That's me blanking out the MAC addresses by the way.

I've had that sort of response since using the kernel and drivers you have installed.

Two thoughts come to mind. Do you have the broadcast name of your wireless access point set to be hidden? That can cause problems for Linux Wireless.

Is there a possibility that you could connect to the internet by wire and update your Fedora installation. I'm not sure what that would prove, but it's pretty much all I can think of given your results.

If you have a live cd version of Fedora then it may be worth booting up from that for a while. My 3945 worked straight away from that through NetworkManager on the Gnome Panel in the notification area to the top right.

That would at least assure us that none of your previous attempts at connecting are conflicting with what we are trying now.

Don't try to control the card through the Gnome System Menu - Administration - Network because that conflicts with NetworkManager and the other way around.

[CraigWatson]

I have the same card (Intel 3945ABG) and it works fine from the Network Manager applet. To set the applet to start on each login, go to:

System --> Preferences --> Personal --> Sessions

And add (if it isn't already there):
Name: Network Manager
Command: nm-applet --sm-disable

Then go to:

System --> Administration --> Services (you'll need to enter your root password)

And make sure that NetworkManager and NetworkManagerDispatcher are checked (ticked).

After that, reboot and you should be given an icon in the notification area. When you click on it, you should then be given a list of wireless networks within range - the rest is fairly straightforward

[birger]

I have the same card in a Lenovo T60
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)

With the 2.6.24.3-34 kernel it connects fine to my wep-protected home network using NM, but I do have a weird issue.

It only connects once. If I need to reconnect some hours later I have to reboot my router/access point and then disable and reenable networking in NM. Then just wait until it discovers the access point again. After rebooting the router/access point this takes some time, but then it works. Just restarting networking or even rebooting the laptop isn't enough. It finds the network much faster then, it claims to associate ok, but it never manages to get a dhcp reply. My cellphone connects fine, so the router/access point is ok. I believe NM somehow caches too much from the previous connection unless I also reboot the access point.

[birger]

To clarify... With restarting networking I mean through the nm applet.
Right-click on the applet and disable wireless. Then disable networking. Then enable both again in opposite order. Then wait until my wlan is listed again and click on it. And as I said this only works if I reboot my combined router/access point first.

[bbfuller]

Hello CraigWatson and birger

I think you are both one step further ahead than Dr.AMA.

His problem seems more to do with getting his card recognised rather than controlling it.

I'm sure that if you both do the iwlist command I mentioned in post#6 you would get the output that Dr.AMA is missing.

birger,

Odd your having to reboot the access point. Is there a possibility that it's time based? I had a problem at one time where I had to wait for my card to forget what it had loaded in it before I could restart and regain control of it. In my instance, waiting 10 minutes to reboot wasn't enough, 15 minutes was.

If you are rebooting your machine my other suggestion to try probably won't make any sense, but:

service NetworkManager restart

as root, will reload your wireless where restarting the network won't.