What's Wrong With Utux-Utux?

To you've upgraded Gutsy to Hardy, and had error in your screen resolution. Example for me, I've got only 800 x 600 pixels although choose 1024 x 768 pixels. Here's the way out.
The new Xorg is supposed to be all nice and hotplugable, but dpkg-reconfigure xserver-xorg is no more. /etc/X11/xorg.conf is also now very barebones. This is for the hotplugability. The correct way to configure this new version of X is with the xfix command. Changing resolution is done on the fly with xrandr.