that's strange. are you sure you are in extended desktop mode? did you check your settings? these may be silly questions. i never had a problem with a 15" Apple LCD and a 15" KDS, either with extended desktop or mirroring. i'm afraid i can't help you beyond the basics.Originally posted by maclamb
I have a 15" Apple ADC and a 21" Viewsonice VGA connected at once and both do not work together.