I'd recommend moving to Suse 10.1 - I had some video problems with 10.0 that were cleared up with 10.1. Make certain that there is no mention anywhere in /etc/X11/xorg.conf of the 1900x1200 resolution. It must be hiding in there somewhere. If not, maybe check $HOME/.xinitrc or $HOME/.xsession, if either of those files exist. (they may not) What X server are you using?? X.org 6.8.2, or 6.9??