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> Wireless/ndiswrapper In Linux, Under Construction
post Feb 8 2005, 01:14 PM
Post #1

RMS is my Hero

Group: Support Specialist
Posts: 862
Joined: 18-February 04
From: Wisconsin
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I have to get to my next class, and I fear I will forget to post these, so I'll go ahead and post them now.

I wrote these from a windows machine, so I have been unable to double check everything here. Please message/leave any comments/suggestions/etc, and I'll be sure to give you credit.

Wireless for linux is tricky at best, and frustrating almost all the time.

Wireless support for linux is progressing slowly, and it can be very frustrating to set it

up correctly.

That being said, you can get the majority of wireless cards to work for linux, even if it

takes a little bit of extra work.

The reason for this? You can actually use the Windows XP (and perhaps other versions of

windows, I'm not sure) drivers.

In most cases, if it work's with windows, it will work with linux. Just with more work


Every distro is very diffrent when it comes to wireless, which can be frustrating. Debian

(woody) worked quickly, after setting up nidis wrapper. SuSe 9.1, however, took nearly an

hour to work (be default, they cripple wireless. Several files you need for wireless are

making, and you have to make them. Manually.)

If you want help with SuSe or other distros that my guide doesn't work with, I suggest you

visit their forums.

This post I found on SUSE's forums might help:

Before we start, I reccommend that you grab dhcpcd. Most distros include this by default,

but you might have to install it yourself. I won't cover this here, since you can usually

find a .rpm/.deb/etc file for it, or grab it through yast/apt-get/up2date.

Let's start by seeing if your wireless card is recogized by linux.


Does any wlan# show up? If so, skip the next section. If not, read on.

Section 1: Setting up ndiswrapper

ndiswrapper is *very* easy to set up.

Download the latest release from

tar -zxf ndisiwrapper-x.x.x.tar.gz
cd ndiswrapper*
make install
ndiswrapper -

Section 2: Setting up your wireless device

Make sure you've 'modprobe ndiswrapper'

Pop in your wireless driver CD, and:

mount /dev/cdrom /mnt/cdrom
ndiswarpper -i /mnt/cdrom/WinXP/driver.inf

iwlist wlan0 (or whatever number) will show you details about the various wireless networks

around you.

Find the one you want to use, and copy/write down the information listed. Things to look for

are ESSID, mode, and encryption upon other things.

iwconfig wlan0 will show the *current* details of whatever network you are connected to. If

the internet isn't working, you want to check here and see what you're missing! (be it a

key, ESSID, or DHCP)

/usr/sbin/iwconfig wlan0 key open KEYHERE (open might be replaced by managed, depending)
/usr/sbin/iwconfig wlan0 essid ESSIDHERE

Generally then all you need to do is 'ifconfig wlan0 up' and 'dhcpcd wlan0'

You may have to replace dhcpcd wlan0 with 'ifup wlan0' or 'ifup wlan0 wlan0'

You can automate this process at startup by using this simple script, and adding it

.bash_profile (for when you log in). You might want it somewhere else, it's up to you.

Personally, I don't like it running on start up for security reasons. It's not that hard to

type sudo /home/user/wireless

Feel free to copy/change this little script. You might want to make several of them

(wireless-home, wireless-school, wireless-friend1, wireless-friend2,

wireless-neighborshouldsecurehisconnection... wink.gif)

echo "Loading ndiswrapper..."
/sbin/modprobe ndiswrapper
echo "Setting up wlan0..."
#I require open, instead of restricted. You might have to change this
/usr/sbin/iwconfig wlan0 key open KEYHERE
/usr/sbin/iwconfig wlan0 essid ESSIDHERE
echo "Finishing..."
#I acually need to use these three to get it working in SuSE. xD
#Trial and error will help you find which one(s) you need
/sbin/ifup wlan0
/sbin/ifup wlan0 wlan0
/sbin/dhcpcd wlan0

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