02-10-2014 02:26 PM
RE: UP2414Q won't reliably resume from sleep or reboot using mDP to DP cable
Check the label on rear/bottom. The team is investigating this. For now, can you set it to DP1.1/30Hz/3840x2160 so you do not have to deal with the issues while this is being worked?
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Run the PC pre-Windows diagnostics
Where do I find my Dell PC Service Tag or Express service code?
Out of Warranty Support