Samsung SyncMaster XL20 - Manual (Page 25)

If there is no Mode at All Display Modes, select the level of resolution and vertical
frequency by referring to the Preset Timing Modes in the user guide.
Linux Operating System
To execute X-Window, you need to make the X86Config file, which is a type of system setting file.
1. Press Enter at the first and the second screen after executing the X86Config file.
2. The third screen is for setting your mouse.
3. Set a mouse for your computer.
4. The next screen is for selecting a keyboard.
5. Set a Keyboard for your computer.
6. The next screen is for setting your monitor.
7. First of all, set a horizontal frequency for your monitor. (You can enter the frequency
directly.)
8. Set a vertical frequency for your monitor. (You can enter the frequency directly.)
9. Enter the model name of your monitor. This information will not affect the actual execution
of X-Window.
10. You have finished setting up your monitor.
Execute X-Window after setting other requested hardware.