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Old 04-30-2008, 03:57 PM   #1
Registered: Apr 2008
Location: Columbus Ohio, USA
Distribution: Ubuntu 8.04
Posts: 105

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Ubuntu wireless help

ok, i have switched to ubuntu, the reason being i could not get wireless to work on fedora, now that iu have switched to ubuntu, i have found the same problem, i am using a linksys WMP54G, i also have a Netgear WG311T, i started with the netgear, had a driver, then tried to connect to multiple unprotected networks, none of them worked, it showed that they were there, i clicked them, it showed the two balls spinning, the first one turned green, then it said there was an error, with the little orange triangle with the "!" in it. I know i had an appropriate driver. then i tried the linksys, got a driver for it, and tried to connect to unprotected networks, same thing, this also happened to me on fedora, im not sure what the problem is and was wondering if i could get some help, thanks!
Old 05-01-2008, 07:59 AM   #2
Registered: Feb 2005
Distribution: Ubuntu, CentOS
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More Info

Is this the KDE desktop or gnome?

Are you getting a DHCP address from your wireless router, or are you using a fixed IP address? You are probably taking the default of DHCP.

The only way I have been able to get wireless working in Ubuntu/KUbuntu is to start with /etc/network/interfaces that looks like this:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

If that's not the case, using sudo preserve the /etc/network/interfaces file to some name like /etc/network/interfaces.installed, and then -- using sudo -- edit /etc/network/interfaces. Then reboot. (I have never found a useful way to stop completely Network Manager and restart it without rebooting.

If you are indeed using KDE, I have found wireless to be a bigger pain on KDE than on Gnome. Don't use KWallet. Try reading around to get your WEP-encrypted password put into one of the "rings". You'll need to read more about those; I am not an expert.
Old 05-01-2008, 08:16 AM   #3
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First, open a terminal and enter ifconfig--see if your wireless is there (usually wlan0, but could be eth_ (0, 1, 2, etc.) if it's not there, do ifconfig wlan0 up.

If you see you wireless device in ifconfig, then your driver is OK.

Next, do iwlist wlan0 scan Look at the Quality numbers. Anything less than 50/100 will be difficult to get working.

finally, you can try configuring and connecting using iwconfig and dhcpcd. Following is an example, using mynetworkname, an ascii WEP key (mykey), and wlan0 as the device.
iwconfig wlan0 essid mynetworkname key s:mykey
dhcpcd wlan0

On Ubuntu, you probably need sudo to run these commands---or enable your root password and then su to become root.

I have had some kind of issue with most GUI wireless managers--I now use CLI tools as above--or profiles + something like netcfg (on Arch)

Last edited by pixellany; 05-01-2008 at 08:17 AM.


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