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tzvi
December 27th, 2008, 03:05 AM
Hi -

I've been researching this problem for the last 6 weeks with no luck. I haven't found a post matching my exact problem.

I connect to my neighbor's encrypted wireless network with no problem (he gave me the password and I entered it into Network Manager.) However when I try to connect to an open network at the coffee shop I get a dialog box asking for the password. This happens 80% of the time, but there are times when I can connect. I think the coffee shop uses a Linksys router (I do not have access to it). It should not ask for a password if it is an open network- they do not encrypt for a short time, or require that you get a token, etc., - this is a one man shop and he said he doesn't even know how to encrypt his network. Other patrons use it without problems.

I started using Ubuntu in August, and I love it. I am a beginner but can use the terminal. Below is some info on my system plus the output of some commands suggested (while connected to the encrypted network). Thank you for any help.


Dell Inspiron 1525 laptop
Intel PRO/Wireless 3945ABG Network Connection (rev 02)
Driver: iwl3945
Ubuntu 8.04.1
Use Network Manager
2.6.24-22-generic i686

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



ifconfig
eth0 Link encap:Ethernet HWaddr 00:1d:09:58:79:48
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:16

eth0:avahi Link encap:Ethernet HWaddr 00:1d:09:58:79:48
inet addr:169.254.4.132 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
Interrupt:16

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2588 errors:0 dropped:0 overruns:0 frame:0
TX packets:2588 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:129400 (126.3 KB) TX bytes:129400 (126.3 KB)

wlan0 Link encap:Ethernet HWaddr 00:1f:3c:a1:c1:6b
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21f:3cff:fea1:c16b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:61393 errors:0 dropped:0 overruns:0 frame:0
TX packets:53072 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:88257870 (84.1 MB) TX bytes:5506877 (5.2 MB)

wmaster0 Link encap:UNSPEC HWaddr 00-1F-3C-A1-C1-6B-00-00-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)




iwconfig
lo no wireless extensions.

wmaster0 no wireless extensions.

wlan0 IEEE 802.11abg ESSID:"VHLL3"
Mode:Managed Frequency:2.412 GHz Access Point: 00:18:01:F3:E2:00
Bit Rate=5.5 Mb/s Tx-Power=15 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Link Quality=42/100 Signal level:-84 dBm Noise level=-96 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

eth0 no wireless extensions.



sudo lshw -C network
*-network
description: Wireless interface
product: PRO/Wireless 3945ABG Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:0b:00.0
logical name: wmaster0
version: 02
serial: 00:1f:3c:a1:c1:6b
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list logical ethernet physical wireless
configuration: broadcast=yes driver=iwl3945 ip=192.168.1.2 latency=0 module=iwl3945 multicast=yes wireless=IEEE 802.11abg

tzvi
January 29th, 2009, 02:55 AM
I talked with a Linux guy here where I live and we tried wicd and that solved this problem.
http://wicd.sourceforge.net/
Add the repository then install the package. It will automatically uninstall Network Manager.