Knowledge Base

Issues you may encounter using the UP2715k Dell UltraSharp 27 Ultra HD 5K Monitor


Table of Contents:

  1. Font size too small when on 5k3k resolution. (Pictures and text too small in Windows and applications.)
  2. Configuring your system and theUP2715K to display 5k3k @ 60Hz resolution.
  3. No video/black screen recovering from PC sleep
  4. Cannot see POST screen (Boot-up screen) on some systems
  5. Cannot get 5k3k @ 60Hz using two separate graphics cards
  6. Cannot get 5k3k @ 60Hz on a Dell E-port plus Advanced Port Replicator
  7. Long time for video to appear from power on or monitor sleep state
  8. No video when connecting a single DisplayPort cable
  9. The Left and Right side of screen do not sync/align.
  10. Screen Flicker
  11. Video jittering when using AMD Wx000 graphics card at 5k3k @ 60Hz.
  12. Abnormal behavior on some Apple Mac platforms
  13. Can't get 5k resolution on Mac

This article provides the information on "Issues you may encounter using the UP2715k Dell UltraSharp 27 Ultra HD 5K Monitor".


Font size too small when on 5k3k resolution.(Pictures and text too small in Windows and applications.)

At resolution 5120x2880 (5k3k), the monitor's is displaying at 218 pixels per inch (PPI). As a result fonts and icons on the screen to appear small.

If the fonts and icons are too small for your preference, then it is suggested that you increase the font scaling to 150% (Control Panel-> Appearance and Personalization-> Display-> Make text and other items larger or smaller). For additional information, see the Techsheet included with your display.

Associated content:

Issues users need to understand when using UHD (4K x 2K) and UHD+ (5K x 3K) displays (Text and icons are too small etc.)

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Configuring your system and the UP2715K to display 5k3k @ 60Hz resolution.

If you are having difficulty achieving the 5120 x 2880 (5k3k) maximum resolution of your display, check the information below to ensure your configuration meets all minimum requirements for this technology.

  1. Ensure graphic card supports 5k3k:
    • Supported cards include: NVidia Quadro series, K2200, K4200, K5200. GeForce series, GTX980, 970, 960. 1060, 1070, 1080 AMD FirePro series eg: W9100, W7100, etc. Radeon series EG: R9 295X2, HD7990, etc. Ensure the graphics card has 2 or more DP outputs.
  2. Installing the graphics card driver
    1. NVidia graphics card:
    2. AMD graphics card:
    3. DELL: Precision Desktop with AMD Graphics (T1700 Mid 2013, Tower 5810, 7810, 7910)
    4. Apple
      • Models: MacPro (2013 Cylinder), iMac 27" Retina 5k Display, MacBook Pro 15" (2014 with NVidia GT750M)
      • OS version: 10.10.3 Yosemite or later

If you have the required hardware to support the display, the next thing to check is your cable connections.

  • Use the 2 in-box DisplayPort (DP) cables.
  • Both DP cables needs to be connected. DP1 (monitor-side) should be connected to Primary DP port (Graphics card side). (See the Techsheet included with your display).
Important Note: Ensure both DP cables are connected to the same graphics card (not different graphics card).
  • Change resolution on your system to 5120x2880 @ 60 Hz.

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No video/black screen recovering from PC sleep

After PC wake up from sleep, hibernate, etc., intermittent no video or black screen. This may happen on AMD Wx000 series graphics card.

Workaround:

  1. Push any OSD or power button, or AC power cycle to recover.
  2. If using NVidia graphics card, update NVidia graphics driver to R347.88 or later.
  3. To further avoid this problem, disable Monitor Sleep from OSD (Menu>Energy Settings>Monitor Sleep>Disable).

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Cannot see POST screen (Boot-up screen) on some systems

Cannot see POST screen (Boot-up screen) when cold boot or restart computer. This is due to slow recovery and connection time of the monitor.

If accessing POST screen is critical, please connect to another monitor (non-4k, non-5k) and restart system.

NOTE: This is technical limitation of the monitor.

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Cannot get 5k3k @ 60Hz using two separate graphics cards

You will not get 5k3k resolution by connecting the 2 DP cables from monitor to 2 different graphics card on the same PC, or different graphics cards in 2 separate systems.

Connect both DP cables to the same graphics card that have 2 or more DP ports. Ensure the graphics card can support 5k3k. (Examples of supported GFx cards include: NVidia Kx000, x200 series cards, AMD Wx000, Wx100 series cards.)

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Cannot get 5k3k @ 60Hz on a Dell E-port plus Advanced Port Replicator

After following recommended DP cable connection information in the Users Guide you will not be able to display 5k3k 60Hz.

The Dell E-Port Plus Advanced Port Replicator with USB3.0 can only support up to 5120x2880 @ 30Hz.

Ensure the E-dock is with USB3.0(blue USB connector and Dell Part Number 35RXK version A01). Older E-docks (black USB connector or DPN 35RXK A00) will not support 5k3k in any configuration.

Note: Notebooks to be used must have NVidia Kx000 or AMD Wx000 series internal graphics card.

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Long time for video to appear from power on or monitor sleep state

Due to 5k technology limitations, the video input detection time may take longer than usual (takes several seconds). This is the expected behavior and not a defect in the display. The long detection time may result in not being able to see POST screen/boot up screens when your turn on your system. Below are the estimated time taken for video detection. During video input detection, please do not power off the monitor.

  • AC off/on – it may take about 4 sec from AC On to Dell logo showing, another about 8 sec for image to appear on screen
  • DC off/on – it may take about 8 sec for image to appear on screen
  • Switching between resolution – it may take about 5 sec for image to re-appear on screen
  • PC Sleep/Wake – it may take about 7-9 sec for monitor to wake up and image to appear on screen

You can disable monitor sleep from the the system power management setting if this delay is bothersome.

Note: If accessing POST screen is critical, you will need to connect a non-4k, non-5k monitor and restart system.

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No video when connecting single DisplayPort cable

If you are using a single DisplayPort (DP) cable connection, you must connect to either the DP1 port or the Mini-DP port of the display. Your display resolution will be limited to 3840x2160,

Note: You will encounter a no video state if you connect to DP2 port alone on this display.
Note: To get 5120x2880 resolution, you must use dual DP cables provided with your display and connect to DP1 and DP2 port on the display.

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The Left and Right side of screen do not sync/align

Your monitor may not have recovered properly after your PC wakes from sleep/hibernate, DC power cycle (pressing the monitor’s on/off switch), or switching between different resolutions. Symptoms include: Split screen, Left and Right of screen not sync, stretched or garbage image, scrolling image on screen.

Workarounds

  • unplug and plug back in the AC power cord from the display.
  • If using NVidia graphics card, update NVidia graphics driver to R347.88 or later.
    • NVidia drivers download page: (http://www.nvidia.com/Download/Find.aspx)
    • Always install the driver with Clean Install. (During installation process, select "Custom" install. Select the box that indicate "Perform a Clean Install").
Note: If you are using a NVidia graphics card, updating to latest NVidia graphics drivers may prevent this issue.

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Screen Flicker

Flicker on screen may occur right after the symptom of split screen or distorted video happens.

To resolve this issue, unplug and plug back in the AC power cord from the display to recover from flickering screen. Once you return to a normal screen image, leave the monitor on for 1 hour to let the residual voltage stabilize in the panel. The flicker will be eliminated.

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Video jittering when using AMD Wx000 graphics card at 5k3k @ 60Hz.

Jittering may be observed on screen when using older AMD Wx000 series graphics card at 5k3k @ 60Hz resolution. For more details, see "Configuring your system and the UP2715K to display 5k3k @ 60Hz resolution) above

Note: This is a limitation of the graphics adapter, not a fault of the display.

Use the newer AMD Wx100 series graphics card (e.g. W5100). Dell also recommends that you always use cables provided with the display or other DP1.2 certified cables.

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Abnormal behavior on some Apple Mac platforms

  • Apple MacPro MD770TA/A - Black screen
    • Workaround: MacPro MD770TA/A does not support DP1.2. Upgrade to new MacPro that support DP1.2
  • Apple MacPro (2013, Cylinder)3.7MHz ME253TA/A with AMD FirePro D300 on 10.9.4.
    1) Connect to monitor 1xDP cannot show 4k2k.
    2) Connect to monitor 2xDP detected as 2 separate monitor instead of showing 5k3k.
    • Workaround: MacPRo ME253TA/A does not support EDID with DisplayID tile display. Connect 1xDP to monitor mDP to get 4k2k (max resolution).
  • Apple MacPro (2013, Cylinder) with 10.9.5 - Connect to monitor mDP shows black screen.
    • Workaround:
      1) To get 5k3k @ 60Hz - Update to Mac OS 10.10.3. Connect 2x mDP to DP cable to monitor.
      2) To get 4k2k @ 60Hz - Update to Mac OS 10.10.3. Connect 1x mDP to DP cable to mDP port on monitor.
  • iMac 27" Retina 5k Display with 10.10 - Connect using TB (Thunderbolt) to monitor DP1 (blue label) shows only 2560x1440.
    • Workaround:
      1) To get 5k3k @ 60Hz - Update to Mac OS 10.10.3. Connect 2x mDP to DP cable to monitor.
      2) To get 4k2k @ 60Hz - Update to Mac OS 10.10.3. Connect 1x mDP to DP cable to mDP port on monitor.
  • Macbook Air MD711TA/A 10.9.4, MacBook Pro 13.3 MD212TA/A 10.8.3, MacBook Air MC506TA/A, Apple iMac A1311 - No Audio output when connecting to monitor DP.
    • Workaround: MacBook Pro 15" (2014, with NVidia GT750M) can support 5k3k @ 60Hz with Mac OS 10.10.3. Older Macs do not support DisplayID. Connect 1xDP to monitor mDP for proper audio support.

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Can't get 5k resolution on Mac

UP2715K 5K display is not supported on Mac.
- Displaying 5K resolution on UP2715K requires 2 x DP1.2 cable connection with DisplayID support.
- Mac driver does not support 2 x DP1.2 configuration and DisplayID.

Workaround: Alternatively, switch to 4K resolution instead. To display 4K: - System requirement: Mac OS 10.10 or later. - Connect to monitor using a single DP to Mini-DP cable. The Mini-DP side should be connected to the monitor.

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Article ID: SLN295089

Last Date Modified: 08/14/2017 02:07 PM


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