mogulman1
1 Copper

RE: Dell Latitude e6440 Displayport flicker e-Port replicator

Changing resolution doesn't seem to be an answer.    Changing my monitor from Displayport 1.2 to 1.1, seems to fix the issue.   I can't leave it as 1.1, because then the max resolution through displayport is only 2k.  

So I change the monitor from Displayport 1.2 to 1.1 and then back again.  This fixes it for a time until the next wakeup from sleep.

Rebooting the PC cures the issue as well.

So seems like a video driver/hardware issue on the laptop.

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