Having minor issues with Xserver.
 

Having started with Ubuntu and it's plain GNOME desktop, I decided to add KDE to it.

When it asked me which Display manager I wanted as default I left it on GDM (As I didn't know what KDE was like). However I would like to make KDM the default.

This didn't seem like much of a problem until yesterday. Every time I boot up I get faced with a login prompt, not the wonderful KDE graphical login (obviously Xserver isn't starting).

I have to log in to TTY1 in command mode and 'sudo kdm' to get the KDM (and X) running.

This is not a major issue but I would like to not have to do this every time I boot up.

Sorry if this makes no sense. :D.

And it's not urgent. Everything works fine after I manually start KDM.

Try the following,

Thanks you. A very prompt response, even though I did say it wasn't urgent! :D

However:
" System startup links for /etc/init.d/kdm already exist."

Moved: This thread is more suitable in Linux-Desktop and has been moved accordingly to help your thread/question get the exposure it deserves.

You write that you have left GDM after install. Have you used it and then changed something to get KDM or was it the same way it is now from the first time?

Mara: I left it at first and changed the default on the login window to load KDM after I logged in.
GDM is still installed.

You probably are running on runlevel 2. To check, run /etc/sbin/runlevel. You should get output like:
Then look into /etc/rc2.d/ (rc3.d if you're running runlevel 3 and so on). You should have S21kdm (or any other SXXkdm) pointing to /etc/init.d/kdm. If it's not there create it using

Ok, thanks Mara. I've tried that but I'm not sure if it works yet. (I'll try it when I get home again today.)

Did you try
sudo dpkg-reconfigure kdm
?

If you haven't yet messed with the links, it should ask you which Session manager you want.
Should :)

Also take care with the S21. On my debian it is S99 which means that it's the last thing to be launched. You should still have an intact /etc/rc3.d/* so you might also check what was there before.

Mara: Nope. it didn't work. thanks though.

nx5000: Yay! That worked. Thanks!

(And there was much rejoicing. :D)