Dell U2518D UltraSharp Display Manager Users Guide - Page 13

Troubleshooting If DDM cannot work with your monitor, DDM will show below icon in your notification tray. Click on the icon and DDM shows a more detailed error message. Please note that DDM only works with Dell-branded monitors. DDM does not support monitors from other manufacturers. If DDM is unable to detect and/or communicate with a supported Dell monitor, please take below actions to troubleshoot: 1. Make sure the video cable is properly connected to your monitor and your PC: especially the connectors should be firmly inserted into position. 2. Check the monitor OSD to ensure DDC/CI is enabled. 3. Make sure you have the correct and latest display driver from the graphics vendor (Intel, AMD, NVidia, etc.). Display driver is often the cause of DDM failure. 4. Remove any docking stations or cable extenders or converters between the monitor and the graphics port. Some low-cost extenders, hubs or converters may not support DDC/CI properly and can fail DDM. Update the driver of such device if the latest version is available. 5. Restart your system. Troubleshooting | 13