Comment 9 for bug 1046619

There is another more up-to-date solution which seems to be less machine-specific.

It requires the creation of a file in /usr/share/X11/xorg.conf.d/

called 10-monitor.conf

Details are described at:
http://samuelmartin.wordpress.com/2012/05/29/enabling-resolutions-in-ubuntu-12-04-lubuntu-12-04/

It cleared up the problem here on my eMac G4

Ron Mitchell