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I'm trying to find a way to make the login screen a KDE session in Ubuntu 10.04 while maintaining a Gnome Session after logging in. The reason for this is to change the login screen I detest. Any help on how this could be accomplished would be great. Thank you.

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What are you trying to do? Chnage the KDE login screen (KDM, KDE Display Manager), with GDM (Gnome Display Manager)? or the other way around?. – Uri Herrera Dec 20 '12 at 21:29
Other way around. I don't want to use the GDM login screen because of the restrictions that have been put on it since anything past 10.04 as far as installing GDM login themes, so I'm trying to find a way to set it up to use KDE because I've heard that KDE can still run the old GDM login themes. – Morgan Green Dec 20 '12 at 21:48
Oh, if you use GDM, you need to use sudo dpkg-reconfigure gdm – Seth Dec 20 '12 at 21:54
Also, possible duplicate: – Seth Dec 20 '12 at 21:54
You're confusing things here. The log-in screen, is actually called a Display Manager, now, KDM is KDE's Display Manager, GDM is Gnome's. Using KDM will not log you into KDE. If you don't like the default KDM theme you can change it, install systemsettings which is the KDE settings manager from there you can get new themes and change KDM's appearance. – Uri Herrera Dec 20 '12 at 23:14

I haven't used Kde in awhile, but I think you need to do something like this.

Run: sudo dpkg-reconfigure gdm a screen will pop up giving information about display managers.

enter image description here

Hit Enter, then use the arrow keys to highlight kdm and then press Enter. This will change your display manager to KDE's default KDM. Restart your computer for the changes to take effect.

You might need to install Kdm with sudo apt-get install kdm

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