No KDM login, XDM login will not accept keyboard input.

I have finally gotten NVIDIA going with XFree86 4.2, but that killed the sound drivers. After updating, I can no longer get GUI login. If I try XDM as the login manager, I get the login screen but it does not accept keyboard input. I have to use cntrl +alt+bksp to get out. I can login with the console and startx with no problem. If I try KDM (Suse 7.3), it goes directly to the console command prompt for login. Does anyone have any idea what the problem is? /var/log/XFree86.0.log shows the last two lines "Could not init font path element /usr/X11R6/lib/X11/fonts/truetype, removing from list", otherwise, everything is OK in the file. Art