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September 11th, 2017 08:00

U2414H, DisplayPort issue, constant flickering

Hi,

I have a U2414H which goes blank randomly. I have a Dell E7440 which is connected with DP cable. DP 1.2 is enabled on the monitor. In this video you can see the problem in real life. Do you have any suggestion, because it is so annoying.

Thanks

Community Manager

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54.2K Posts

September 11th, 2017 08:00

In a single external monitor setup, MST/DP 1.2 should be Disabled. It is only Enabled if you are daisy chaining to a second monitor via the first monitor DP (DisplayPort) out port.
E7440 mDP out port --> U2414H mDP to DP cable --> U2414H DP in port

The U2414H maxes to 1920x1080 60Hz, so you could also just use HDMI =
E7440 HDMI out port --> HDMI to HDMI cable --> U2414H HDMI in port

6 Posts

September 11th, 2017 13:00

I put the monitor into dp1.1 mode and it solved the problem. Thx.

However when I first set it up, I had to enable dp 1.2 in order to have the image. Like this: multimonitorcomputer.com/.../dell-u2414h-displayport-not-working.php

So this is a bit controversial...

Community Manager

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54.2K Posts

September 12th, 2017 06:00

That site has omitted some important information. Not all computer DP out ports support DP 1.2 As our Guide page 26 states =

December 5th, 2021 14:00

Also for anyone looking for answers in 2021 - cable quality is so very important.  I had a similar issue, switched from what's branded as a "4K" Display Port cable that was working fine on another system to an "8K" Display Port cable - problem solved.  

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