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7. Editing your startup files

If this worked you will probably want to change your X configuration to start X this way automatically. There are lots of ways to do this and there are probably better ways than what I've shown below. Here are the methods I used for changing startx and gdm.

If you run X from the command prompt add the +xinerama option to the startx script.

root# > vi /usr/X11R6/bin/startx

At the very end of the file the script starts X with the command xinit. Add the +xinerama option to the very end of that line.

To Configure gdm to start with the xinerama extentions look for [servers] section at the bottom of /etc/X11/gdm/gdm.conf. Add the +xinerama extension to the end of the line that starts with 0=. It should look like this :

0=/usr/bin/X11/X +xinerama

I have never set up kdm, or xdm for Xinerama, but I got the following tip from Dalibor "".

Here's my changes to startup files for slackware 7.x 
(i use KDM and x4.01)

edit /var/X11R6/lib/xdm/Xservers
add +xinerama to the end of last line
:0 local /usr/X11R6/bin/X +xinerama

It appears that KDM uses standard XFree xdm files, so this should work if you
use xdm as well

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