Here is some useful stuff that may help some newbies or not so newbies to optimize or troubleshoot their system Tidbits you may be interested in are: Dual Screen on the DELL Latitude D610

• Search Google
• Choose the ubuntu forum option,
  The reason I like to choose this option is that it seems the ubuntu forums are really getting useful and exact. Less guessing, less searching around, more advice that is going to work. Other sites are good and you may need them. This is just what I choose first.
• For my machine the following link. Ubuntu Forum Link for DUAL monitor on Dell D610
• Remember to cp the old file to a new name you can find later if you crash