[SOLVED] Wireless Connection Error

[OzoneNerd]

I recently began using Kubuntu for my daily computer needs and have been surprised by how much seemed to just work. I have only one problem and that is my wireless network connection. I have tried many different wireless monitors and none of them have worked. They seem to fail during the DHCP configuration. I am easily able to connect to my neighbors networks (unsecured, but when I try to connect to my own, I am unable to. Using KNetworkManager, I progress to 28% (I have seen this error elsewhere, but none of the solutions helped me.) My neighbors have unsecured networks, but mine is under WEP, so this might be the problem. I can succesfully hardwire to the router if I need to. I have already edited my interfaces file.

I have an Inspiron E1405 Dell laptop.
My router is a Belkin #F5D8230-4 pre-N.
You can see my wireless card below.

I will now post the output of the commands I find relevant.

sam@sam@kubuntu:~$ iwconfig wlan0 #this is my neighbors network, I'm succesfully connected
wlan0  IEEE 802.11g ESSID:"Belkin_N_Wireless_C18D1B" Nickname:""
     Mode:Managed Frequency:2.437 GHz Access Point: 00:17:3F:C1:8D:1B
     Bit Rate=24 Mb/s Tx-Power=27 dBm
     Retry min limit:7 RTS thr:off Fragment thr=2346 B
     Power Management:off
     Link Quality=58/100 Signal level=-73 dBm Noise level=-98 dBm
     Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
     Tx excessive retries:0 Invalid misc:0 Missed beacon:0

sam@kubuntu:~$ sudo iwlist wlan0 scan
wlan0  Scan completed :
     Cell 01 - Address: 00:11:50:24:64:1A
          ESSID:"MYESSID"
          Mode:Master
          Channel:1
          Frequency:2.412 GHz (Channel 1)
          Quality=80/100 Signal level=-54 dBm Noise level=-97 dBm
          Encryption key:on
          Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
               9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
               48 Mb/s; 54 Mb/s
          Extra:tsf=00000052cb019c64
     Cell 02 - Address: 00:17:3F:C1:8D:1B
          ESSID:"Belkin_N_Wireless_C18D1B"
          Mode:Master
          Channel:6
          Frequency:2.437 GHz (Channel 6)
          Quality=58/100 Signal level=-73 dBm Noise level=-97 dBm
          Encryption key:off
          Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
               18 Mb/s; 36 Mb/s; 54 Mb/s; 6 Mb/s; 12 Mb/s
               24 Mb/s; 48 Mb/s
          Extra:tsf=0000018a4a68a6a0

sam@kubuntu:~$ lspci | tail #I manually selected only the relevant line:
0c:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
sam@kubuntu:~$ sudo wlassistant #This is just to show the error output.
Loaded application options.
All interfaces: eth0, wlan0, wmaster0
Wireless interface(s): wlan0
Permissions checked.
DHCP Client: dhclient
All executables found.
scan: /sbin/iwlist wlan0 scan
Networks found: 2
Now connected to 'Belkin_N_Wireless_C18D1B'
ACTION: CONNECT.
No pre-disconnection command specified.
Running DHCP client found.
kill_dhcp: /sbin/dhclient -r wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 6782
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

wmaster0: unknown hardware address type 801
wmaster0: unknown hardware address type 801
Listening on LPF/wlan0/00:18:de:29:75:f6
Sending on LPF/wlan0/00:18:de:29:75:f6
Sending on Socket/fallback
DHCPRELEASE on wlan0 to 192.168.2.1 port 67
disconnect: /sbin/iwconfig wlan0 mode managed key off ap off essid off
DISCONNECTED.
No post-disconnection command specified.
No pre-connection command specified.
iwconfig_set: /sbin/iwconfig wlan0 mode managed channel 1 key open xxxxxxxxxx essid MYESSID
iwconfig_ap: /sbin/iwconfig wlan0 ap 00:11:50:24:64:1A
ifconfig_dhcp: /sbin/dhclient wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

wmaster0: unknown hardware address type 801
wmaster0: unknown hardware address type 801
Listening on LPF/wlan0/00:18:de:29:75:f6
Sending on LPF/wlan0/00:18:de:29:75:f6
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 11
Running DHCP client found.
kill_dhcp: /sbin/dhclient -r wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

wmaster0: unknown hardware address type 801
wmaster0: unknown hardware address type 801
Listening on LPF/wlan0/00:18:de:29:75:f6
Sending on LPF/wlan0/00:18:de:29:75:f6
Sending on Socket/fallback
DHCPRELEASE on wlan0 to 192.168.2.1 port 67
send_packet: Network is unreachable
send_packet: please consult README file regarding broadcast address.
CONNECTION FAILED.
disconnect: /sbin/iwconfig wlan0 mode managed key off ap off essid off
sam@kubuntu:~$ cat /etc/network/interfaces #I assume this is how we want it: (I edited it as the wicd instructions say to.)
auto lo
iface lo inet loopback

If any of you have any ideas to help me, I would be greatful. I will be glad to give you more information you need..

[petersohn]

Re: Wireless Connection Error

I have a very similar problem. However I can't connect to either encrypted or unencrypted network. When trying to connect with KNetworkManager, it stops at 28%, then fails after a time. With wlassistant, it immediately fails with the encrypted network, and has a timeout with the unencrypted one, then it fails.
The same network on the same machine works well under Windows.

Here is my wlassistant log. First I tried to the encrypted network, then disabled encryption on the router and retried.

peet@peti-lenovo-linux:~$ sudo wlassistant
Loaded application options.
All interfaces: eth0, wlan0
Wireless interface(s): wlan0
Permissions checked.
DHCP Client: dhclient
All executables found.
scan: /sbin/iwlist wlan0 scan
Networks found: 4
ACTION: CONNECT.
Running DHCP client found.
kill_dhcp: /sbin/dhclient -r wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

Listening on LPF/wlan0/00:18:de:b1:fe:02
Sending on  LPF/wlan0/00:18:de:b1:fe:02
Sending on  Socket/fallback
No pre-connection command specified.
iwconfig_set: /sbin/iwconfig wlan0 mode managed channel 4 key off essid Fent
iwconfig_ap: /sbin/iwconfig wlan0 ap 00:1D:0F:EF:65:24
==>stderr: Failed to connect to wpa_supplicant - wpa_ctrl_open: No such file or directory
Using wpa_supplicant driver: wext
WPA client started. Waiting for status...
==>stderr: Failed to connect to wpa_supplicant - wpa_ctrl_open: No such file or directory
CONNECTION FAILED.
disconnect: /sbin/iwconfig wlan0 mode managed key off ap off essid off
scan: /sbin/iwlist wlan0 scan
Networks found: 6
ACTION: CONNECT.
Running DHCP client found.
kill_dhcp: /sbin/dhclient -r wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

Listening on LPF/wlan0/00:18:de:b1:fe:02
Sending on  LPF/wlan0/00:18:de:b1:fe:02
Sending on  Socket/fallback
No pre-connection command specified.
iwconfig_set: /sbin/iwconfig wlan0 mode managed channel 4 key off essid Fent
iwconfig_ap: /sbin/iwconfig wlan0 ap 00:1D:0F:EF:65:24
ifconfig_dhcp: /sbin/dhclient wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

Listening on LPF/wlan0/00:18:de:b1:fe:02
Sending on  LPF/wlan0/00:18:de:b1:fe:02
Sending on  Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
Running DHCP client found.
kill_dhcp: /sbin/dhclient -r wlan0
==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit [url]http://www.isc.org/sw/dhcp/[/url]

Listening on LPF/wlan0/00:18:de:b1:fe:02
Sending on  LPF/wlan0/00:18:de:b1:fe:02
Sending on  Socket/fallback
CONNECTION FAILED.
disconnect: /sbin/iwconfig wlan0 mode managed key off ap off essid off

[toad]

Re: Wireless Connection Error

@OzoneNerd

For knetworkmanager to work your /etc/network/interfaces must not contain anything but:

auto lo
iface lo inet loopback

If there is any other stuff in there it will kack out out you...

@petersohn

Check your /etc/network/interfaces as well, please.

[petersohn]

Re: Wireless Connection Error

That didn't help me.
Strange that when I try wlassistant from the start menu, it doesn't throw me out immediately for the encrypted network as it does when I run it from command line. It does the same as with unencrypted networks.

[OzoneNerd]

Re: Wireless Connection Error

@OzoneNerd

For knetworkmanager to work your /etc/network/interfaces must not contain anything but:

auto lo
iface lo inet loopback

If there is any other stuff in there it will kack out out you...

. . .

If you look at the last item in my shell output. You will find that my /etc/network/interfaces already is how you say it should be. Peter, do you use the same 3945ABG network card as I? (If you don't know how to check run lspci)

I have tried to use ndiswrapper, and it did not help. I have tried the solutions involving modprobe.

My wireless work quite well in other distros, so if anyone knows of any Ubuntu/Kubuntu (It doesn't work in Ubuntu either) changes to the wireless interfaces, please tell me. Otherwise, I will have to switch to these distributions. I don't want to do this, but I will if I must.

[toad]

Re: Wireless Connection Error

Thanks, now I've found it There is some weird output when you tried "sudo dhclient wlan0" which may be at the root of your problem.

==>stderr: There is already a pid file /var/run/dhclient.pid with pid 134519072

Delete /var/run/dhclient.pid and try knetworkmanager first. If not successful, do a dhclient...

[OzoneNerd]

[[Solved]] Wireless Connection Error

Righto, after a couple months of random attempts. I have figured it out.

I made two fixes, so I don't know which one fixed it. Peter, try run the following commands.

sudo apt-get install linux-backports-modules-hardy-generic

sudo rmmod -f iwl3945
sudo modprobe iwl3945 disable_hw_scan=1

sudo shutdown -r now #This will restart your compy.

[petersohn]

Re: Wireless Connection Error

It doesn't work for me. Note that for the driver I use a windows driver emulator.

[petersohn]

Re: Wireless Connection Error

Okay, I uninstalled the win driver, and did what you just said. But what should I do now to make the driver automatically start with the system?

[OzoneNerd]

Re: Wireless Connection Error

You never said if you were using a 3945ABG card like I. If you are, then uninstall ndiswrapper, cause you have no need for the windows driver.

If you don't have a 3945ABG card, then I can't help you.

(Help: How do I mark a thread as solved?)

[Snowhog]

Re: Wireless Connection Error

(Help: How do I mark a thread as solved?)

Return to your first post in this thread. Click the modify button and add SOLVED to the subject line.

[toad]

Re: [SOLVED] Wireless Connection Error

Well done! Solved despite "help"

[petersohn]

Re: [SOLVED] Wireless Connection Error

How do I make my driver autostart at startup?