1) Configure your kernel

Be sure to have AGP (Device drivers->Character device) and DRM (Device
drivers ->Graphic drivers) enabled for your card. Now rebuild it using
the usual way.. and reboot.

After the boot look at dmesg, you should find something like this:

agpgart: Detected 892K stolen memory.
agpgart: AGP aperture is 128M @ 0xf0000000
[drm] Initialized drm 1.0.1 20051102
...
[drm] Initialized i915 1.4.0 20060119 on minor 0
[drm] Initialized i915 1.4.0 20060119 on minor 1

(If you have a Dell computer like D400 with Intel 855GM, you need to

choose the i915 driver for DRM, edit the linux/.config since it doesn’t
appear in common menuconfig)

2) Install the latest Xorg

This is the tricky part, since Xorg update are not really easy this days.

sudo apt-get install xserver-xorg

Let’s go, for a long update… (I’m switching from 6.9 to Xorg 7.0)..
I spent a little time to fix some errors here.. but nothing really important.

3) Install Mesa

Now, you need to install the openGL libs, simple apt-get this packages:

• xlibmesa-dri
• xlibmesa-gl
• xlibmesa-glu
• mesa-utils
• libgl1-mesa-dri
• libgl1-mesa-glx

4) Tests

Start your Xserver, and look in /var/log/Xorg.0.log, you should fine stuff like
this:

(II) I810(0): [drm] created "i915" driver at busid "pci:0000:00:02.0"
(II) I810(0): [drm] added 8192 byte SAREA at 0xe0b2f000

So we can test check with glxinfo

display: :0  screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.2

Be sure to have direct rendering ok.. if this is ok, .. you can start glxgears..
and Google Earth :) ..

5) Issues

Some users have some trouble w/ DRI not working with strange messages
( sizeof(I830DRIRec) does not match …), or strange display updates (out of syncr
windows .. ). This seems to be bugs in Mesa, you can try the latest experimental
(which fix all issues for me). Simply install this packages:

libgl1-mesa-dri_6.5.0.cvs

libglu1-mesa_6.5.0.cvs

libgl1-mesa-glx_6.5.0.cvs

Update: Added issues w/ my Dell Latitude D400

Update2: The latest mesa from the Debian SID is working right now (no more experimental)

• [1] http://www.larsen-b.com/Article/212.html
• [2] http://earth.google.com/

Kismet

First install Kismet. You need a wireless card that support RFMon in monitor mode. I think Madwifi cards, and patched Orinoco are the only ones that support this.

Launch Kismet, and now check for a given AP that kismet know the best level..

If everything is ok, edit the kismet config file and set gps=try

GPSDrive

Download and install the latest CVS version of GPSDrive (I have some issues with the latest tgz and kismet). The next step is to have a GPS working with gpsd. Most GPS will work, I bought a cheap one with a USB cord on ebay.

Simply launch gpsd, and after gpsdrive. You should see the reception level in GPSDrive.

MySQL

To use Kismet + GPSDrive, you need to have a MySQL database. In fact GPSDrive will ask to kismet the new APs, and dump this informations in a MySQL db. You can find the create.sql in GPSDrive sources.

mysql -u root -p < ./create.sql

This will add a user : gast / gast

First try

Ok, now launch GPSDrive and set the ‘use SQL’ (or edit the config file), and quit.

Now to start the whole stuff:

• Plug the wireless antenna (this is better for wardriving ;)
• Plug the GPS
• Launch gpsd (be carefull to have enought satellite in view)
• Launch Kismet (it should tell you, it find the GPS…)
• Launch GPSDrive (it should display a little kismet logo on bottom)
• Now, you’re ready to go, walk down the street you should see new APs on the GPSDrive map.

After the trip: Google Earth

Ok, now you have a lot of points in your database.. And GPSDrive have a little troubles to display them.. After a little time, i decided to install Google Earth, and look at the way to add new points on the map..

This, is quite simple, all i need to do is to extract data form the SQL, and build a xml file that contain all the points. I decided to write gpsdriveToGoogleEarth.py. This quick and dirty script will generate a file ‘ap.kml’. Now simply launch Google Earth and open this file. You will see something like this:

The main issue for me, is that Google Earth doesn’t support Linux right now so I need to dual-boot.. But this provide a easy way to build the card without too much pain. And i can share the Google Earth file others guys simply.

WARNING

I do this only for the fun, so don’t try to hack wireless access point using this howto, this is not the goal !

– Enjoy