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No signal is seen using a DisplayPort connection to a Dell UltraSharp 52 Thunderbolt Hub Monitor U5226KW when the following steps are performed: Connect the monitor with a Mini DisplayPort (mDP) to DP (or DP to DP) cable to the computer and then turn on the monitor and computer. Put the computer into hibernate and then wake it up, restart the computer, or shut down and then turn on the computer. The monitor cannot detect the video signal. Affected Monitors: Dell UltraSharp 52 Thunderbolt Hub Monitor U5226KW Affected Platforms: Dell Pro Max Micro FCM2250 Dell Pro Max Micro XE FCM2250 Dell Pro Max Slim FCS1250 Dell Pro Max Slim XE FCS1250 Dell Pro Max Tower T2 FCT2250 Dell Pro Max Tower T2 XE FCT2250 Precision 3280 Compact Precision 3280 XE Compact Precision 3460 Small Form Factor Precision 3460 XE Small Form Factor Precision 3660 Tower Precision 3660 XE Tower Precision 3680 Tower Precision 3680 XE Tower Precision 5820 Tower Precision 5860 XL Tower Precision 7820 Tower Precision 7865 Tower Precision 7875 Tower Precision 7875 XL Tower Precision 7920 Tower Precision 7960 Rack Precision 7960 Tower Precision 7960 XL Rack Precision 7960 XL Tower Affected Parts: NVIDIA RTX 4000 SFF Ada NVIDIA RTX 5000 Ada NVIDIA RTX 5880 Ada NVIDIA RTX 6000 Ada
The display timeout is related to affected NVIDIA graphics cards.
Workaround: Turn off the monitor and wait until the computer has finished restarting, then turn on the monitor.
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