Dell P2222H 21.5" 16:9 IPS Monitor - Manual (Page 20)

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| Troubleshooting
Troubleshooting
If DDM cannot work with your monitor, DDM will show below icon in your
notification tray.
2021/03/01
10:17 AM
Click on the icon, DDM shows a more detailed error message.
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10:17 AM
Please note that DDM only works with Dell branded monitors. If you are using
monitors from other manufacturers, DDM doesn’t support them.
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 andyour 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.