Graphics or resolution issue in ubuntu

There are two ways to troubleshoot graphics issue in ubuntu 8.04 hardy version


before running below command backup your xorg.config file in /etc/X11

first is to configuring the graphics one again using
in your terminal
1.sudo dpkg-reconfigure xserver-xorg

or

second one is to install nvidia setiings tools
in terminal
1.sudo apt-get install nvidia-settings
2.then run in terminal
sudo nvidia-xconfig

this fix your display issues


Note : some time above command screw up to bad display settings.be cautious before trying above commands