Optimal resolution (1600x900) not available in monitor settings
I've had a SyncMaster Samsung B2030 monitor hooked up to my 2010 MacMini without problems, until recently, when the monitor displays a message saying that the "Optimal Resolution is 1600x900". When I go into Settings > Display: There is no option for me to select 1600x900. When I select "Best for my device" it goes to the minimal resolution, I believe 800x600.
Can anyone please help me restore my display back to it's optimal resolution?
Thanks.
Mac mini