I am trying to input the frequency manually on the radeon settings , display , custom resolution.
This is my monitor pdf user guide
Use find function and type frequency , there is a list of frequency for different resolution . I am currently running 1900 X 1200.
For Resolution 1900 X 1200 , Horizontal Frequency (kHz) = 74.0 , Vertical Frequency (Hz) = 60 , Pixel Clock (MHz) = 154
Need help on this , thanks a lot !