RE: P2815Q, U2412M, Surface Pro 3 + Dock. Flickering U2412M

I am guessing that you are simply undocking the SP3 (Surface Pro 3) while it is On or in Sleep/Hibernate, correct? Those always lead to DP (DisplayPort) issues when dock/un-dock.

* All three devices are on and connected
* Turn the SP3 OFF (shutdown)
* Un-dock it
* Re-dock it
* Turn it on. Do you see the flicker on the U2412M (Yes/No)

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