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Jingjang
Copper

U3014 problems

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I have just bought my new and shiny u3014. It looks great, but unfortunately I've encountered a couple of problems basically right away. Grateful for any tips and suggestions.  My PC is also brand new and runs a single ASUS nVidia Titan graphics card.  I have installed the most recent drivers and am certain that all the cables are tightly connected.

1. Tiny black lines all over the screen. I was surprised to see them, but there are tiny, really thin black lines all over the screen, causing all images to look as if some kind of retro sci-fi filter is applied to them. My previous HP 24" monitor did not have these lines.  I tried various resolutions, but of course work primarily in the native 2560x1600 one.

2. You have to look very closely to notice, but there is on-screen noise all over the screen which makes the black lines sort of "shift up" when you look closely. I noticed that it only happens when I use the supplied displayport/mini displayport cable, but does not happen when I use the supplied DVI cable.

3. Seemingly random color temperature shifts.  This is definitely the most annoying one.  The monitor appears to shift the color temperature depending on what's on screen. For example, if I open a window that's mostly white (like this forum page for example) to take all of the desktop space, but then bring up a smallish window that would, for example, take a quarter of the screen space but is much darker (say, a Steam library window which is dark grey, almost black), there is a chance that the color temperature for the entire screen will instantly shift.  This is very noticeable and very frustrating.  It seems to occur more often when I use the DVI cable, but also occurs when I use the supplied displayport cable.

I am cautiously optimistic that using a proper displayport cabe (full-size for both ends) may fix some or all of this, but perhaps I'm just doing something wrong.  Any input gratefully received.

Thanks.

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12 Replies
Moderator
Moderator

Re: U3014 problems

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Hi Jingjang,

The Dell U3014 flat panel monitor has a built-in diagnostic tool that allows you to determine whether the screen abnormality is due to an inherent problem in your monitor, or with the computer and graphics card.

  

Please run the built-in diagnostics by following the steps below:

  1. Ensure that the screen is clean (no dust particles on the surface of the screen).
  2. Unplug the video cable(s) from the rear side of the computer or monitor. The monitor, then, goes into the self-test mode.
  3. Press and hold Button 1 and Button 4 on the front panel simultaneously, for 2 seconds. A gray screen appears.
  4. Carefully inspect the screen for abnormalities.
  5. Press Button 4 on the front panel again. The color of the screen changes to red.
  6. Inspect the display for any abnormalities.
  7. Repeat steps 5 and 6 to inspect the display in gray, red, green, blue, black, white and text screens.

The test is complete when the white screen appears. To exit, press the Button 4 again.

If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the graphics card and computer.

Please let us know the findings.

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Jingjang
Copper

Re: U3014 problems

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Thanks, Ravi.  Unfortunately, nothing happens when I press and hold both button 1 and button 4.  A box saying that no DisplayPort signal is in keeps floating across the black screen.

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Moderator
Moderator

Re: U3014 problems

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Jingjang,

When the "No DisplayPort" message appears, do you see the tiny black lines all over the screen? Test the monitor using a DVI to video card DVI. Do you see the tiny black lines all over the screen on DVI to DVI?

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adobepro
Bronze

Re: U3014 problems

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If it's enabled, find and turn OFF "Smart Video enhance."

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Re: U3014 problems

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3. Seemingly random color temperature shifts.  This is definitely the most annoying one.  The monitor appears to shift the color temperature depending on what's on screen. For example, if I open a window that's mostly white (like this forum page for example) to take all of the desktop space, but then bring up a smallish window that would, for example, take a quarter of the screen space but is much darker (say, a Steam library window which is dark grey, almost black), there is a chance that the color temperature for the entire screen will instantly shift.  This is very noticeable and very frustrating.  It seems to occur more often when I use the DVI cable, but also occurs when I use the supplied displayport cable.

I just got my U3014.and was also experiencing the annoying "random color temperature shifts"

I have turned "Smart Video Mode" off in Dell Display Manager and changed the preset mode of my browser from Multimedia to Standard, which seems to fix it.

Jingjang
Copper

Re: U3014 problems

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Thank you. I have replaced my U3014, and turning "smart video enhance" mode off on the new unit helped.  I think my original U3014 was seriously faulty, because (1) those annoying black lines and overall dizziness are not apparent on my new device, so it has to be a manufacturing fault or some kind of nasty and hard to detect damage and (2) my old screen did not even provide the ability to turn smart video enhance off, and the menu buttons were not even behaving properly.  Luckily, my new screen works like a miracle!

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bearely
Copper

Re: U3014 problems

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@Jingjang What is the production date and the REV number (printed on the back of the monitor, below the ports) of the replacement unit that you got that don't have the problem with the lines? Is it later than Feb 2013 and REV A01?

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Moderator
Moderator

Re: U3014 problems

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Hubert Heller,

Thanks! I will try to build a FAQ for the DDM.

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Re: U3014 problems

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So I've been reading the boards and it sounds like most of the U3014 have bad manufacturing defect.  I'd like to order one that is available now through an authorized reseller, but I am afraid the problems is widespread with the units already in the channel. How can I know the units already in the channel are not all bad?

Regards,
Mike

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