Pressing FN+F8 to clone the display is not functioning on the Latitude E6420 and E6520

This article provides information on how to enable clone mode using the NVidia control panel on the Latitude E6420 and E6520

1. Enabling Clone Mode

FN+F8 may not function when the NVidia Optimus technology is enabled on the Latitude E6420 and E6520. To resolve this open the NVidia control panel and enable Clone mode :

1. Click Start

2. Click Control Panel

3. Click Classic View or Small Icons

4. Click NVIDIA Control Panel

5. Click Set up multiple displays

6. Right-click on the display you want to clone, click Clone Displays