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February 14th, 2014 15:00
U2414H - Displayport doesn't work
I bought three of these screens intending to daisychain them from my XFX HD 6670, which supports DP 1.2.
I have found that the displayport input simply doesn't work on any of them. I have tried the cables that came with the monitor, and another cable I know works as I was using it with my old U2410, which works perfectly on my system with dp.
I love the thin bezels and don't want to return the screens, but unless I can get them to work with dp I will have no choice! Can anyone suggest a solution?
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DELL-Chris M
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February 14th, 2014 20:00
robertvan1,
Start with one U2414H #1. Turn the computer and U2414H #1 off.
Computer XFX HD 6670 --> Dell DP to mDP cable --> U2414H #1 mDP
* Turn on the U2414H
* Press the monitor Menu button (3rd from the left) to bring up the OSD (On Screen Display)
* Go to Other Settings
* Go to Factory Reset
* Choose Reset All Settings
* Go back to Display Settings and verify that DisplayPort 1.2 is DISABLED
* Go to Input Source
* Choose Mini DisplayPort
* Exit the Menu
* Turn the computer on
At this point, does the computer and single U2414H operate correctly?
If yes, make sure U2414H #2 and U2414H #3 are also set to Input Source- Mini DisplayPort.
U2414H #1 full size DP Out MST --> DP to mDP cable --> U2414H #2 mDP; U2414H #2 full size DP Out MST --> DP to mDP cable --> U2414H #3.
Once that is setup, U2414H #1 and U2414H #2 must be set to DisplayPort 1.2 Enabled. U2414H #3 must be set to DisplayPort 1.2 DISABLED.
robertvan1
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February 17th, 2014 13:00
Chris, that did not work. I had a sneaking suspicion my graphics card was to blame, and I was correct. Put in a 7750 and all three displays work perfectly.
Anyone with a 6670, be aware that these displays DO NOT work through displayport with this card.
Rob
DELL-Chris M
Community Manager
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56.9K Posts
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February 17th, 2014 15:00
For my notes, did the XFX Radeon HD 7750 use the same driver as the XFX Radeon HD 6670? Or did you also change the driver when you added the XFX Radeon HD 7750? Can you tell from the specifications if the displayports on the cards are different?
robertvan1
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February 18th, 2014 12:00
It is an Asus 7750 I installed. The driver is the same, catalyst 13.12.
Both say displayport version 1.2, but clearly there is a difference between the two.
Rob