|
|
When you add or change resolutions, you have the opportunity to test the new resolution. When you select Test... and click on Continue after the information message, you see a test pattern. If the pattern displays normally, click on OK to configure the resolution; if not, select a different resolution.
If you cannot read your display after ending the test, press the <Ctrl>, <Alt>, and <Bksp> keys at the same time to exit the X server. If you still cannot read your display, you must reboot your computer to reset the display. Be sure to warn any users logged into your system before rebooting.