Dell Latitude C600/C500 Video Problems
Although older models, the Dell Latitude C600 and C500 machines enjoy a new lease of life running Ubuntu. These can unfortunately experience limited video resolution issues, however, something caused not by the graphics card (an ATI Rage 128 Mobility) but by the configuration of the X library.
Begin by downloading this pre-configured xorg.conf file from Ubuntu Geek – this can only be used on a fresh system, so you will need to reinstall Ubuntu before trying this fix. The xorgconf.txt file should be saved to your desktop – do not rename it. We will be using this to replace the contents of the system default xorg.conf file.
In Ubuntu, start the Terminal, and enter:
(Note that there is a space between “cd" and “/etc".)
Next, enter the command that allows you to open and edit the original xorg.conf file:
sudo gedit xorg.conf
You will be prompted for your password, which you should enter. The xorg.conf file will then open in the text editor.
Select and delete all of the contents of this file, and then copy the contents of the xorgconf.txt file into the empty xorg.conf and click Save.
All you need to do then is restart the laptop, and a higher 1024x768 screen resolution will be available!