running kismet restores wifi card internet connection?

Mar 16, 2007 8 Replies

OS: Kubuntu Edgy Linux PC: IBM Thinkpad T23 1.13 WLAN: Atheros 5212 mini pci Router: WRT54G v4 w/DD-WRT



Problem: Sometimes my connection to my router (which is at the range limit for a mid speed connection) just disappears.



I found if I start Kismet, run it for 30 sec. then exit the connection is restored, like nothing happened.



It's like I need to keep the connection active otherwise the card goes to sleep. Problem is I'm not sure there is a sleep mode for my card and I've got all the power saving options in Kubuntu turned off. Hmmm - maybe I should check the BIOS? What about "Wake On LAN" (whatever THAT means lol)?



P.S. I lost connection while I was typing this so I don't think it's a sleep or hibernate issue however, I was not using my connection - I was filling in a text box on Google's usenet web interface.... Running Kismet for 10 sec fixed it as soon as I shut Kismet down....



Any clues?



Ken



What do use to manage your connection KNetworkManager? Will this not allow you to reconnect without using Kismet. I would try to find out why you keep getting disconnected...weak signal/interference. What does it say in /etc/network/interfaces about your wireless card? If I use an atheros card mine starts auto ath0 iface ath0 inet dhcp

Do you mean KWifiManager? I don't have KNetworkManager...... Currently I'm running Network Monitor 2.12.0. As for the signal, I'm sharing an internet connection with my brother down the street. He has 2 PC's and runs my router while I am here at home using wifi. His $#$% wife won't let him help me by moving the router to a window that faces me or installing a bigger antenna on the router. So, I'm stuck with these signal levels.

Here's the dump from /etc/network/interfaces (essid & key x'ed out)

-------------------------------------------------------- auto lo iface lo inet loopback

auto eth1 iface eth1 inet dhcp

auto eth2 iface eth2 inet dhcp

auto ath0 iface ath0 inet dhcp wireless-essid xxxxxxxxx wireless-key xxxxxxxxx

auto wlan0 iface wlan0 inet dhcp

--------------------------------------------

Note I only have 2 network devices - a PCMCIA phone modem and the Atheros mini PCI card. No ethernet. Maybe I've got too many interfaces up there? Maybe too many hosts in the config? I've got 8 there....

Thanks a bunch for the help.

Ken

I have recently downloaded Ubuntu to play with and in the "Add/Remove Applications" is KNetworkManager which is supposed to work well with Kubuntu. I did try it with Ubuntu but reverted to the Gnome front end. I also have NetworkManager Applet 0.6.3 installed.

I cut mine short as I have quite a few listed due to the cards I have been trying.

I found the program you were talking about but I can't seem to get it to work - sure, it runs and all but it says I'm disconnected yet the option to enable wireless is greyed out.

Do I have to turn off/remove the other (network-admin) first? I did that and it took 20 minutes to get it and my internet connection back......

Ken

Also, should I edit that interfaces file? Would that help?

Ken

Ding! Brainfart! If I can't improve the signal at the router and I don't want to splice into the antenna system in the laptop, why not just buy a PCMCIA WiFi card that has or uses a external antenna and hook up to that when I'm at home? I could make a short (

When I first set up my wireless network I installed the following packages as I wanted to run WPA-PSK as a min:- wpa-supplicant network-manager 0.6.3 network-manager-gnome 0.6.3 If you are using KNetworkManager you shouldn't require the last one(when trying KNM I still had it installed) . in the interfaces file for ath0 all I have is auto ath0 iface ath0 inet dhcp

When I run KNetworkManager it appears in the panel at the top of the screen and when I click on it I get a list of all the AP's in my locality. If I click on my AP I get a popup panel which requires me to fill out my Encrypted Key and then to login.

Go to Network Properties > Wife > Disable

Or uninstall...

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