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TSG: Pixel noise on display

Photo Examples

Video examples

This video gives an example (https://www.youtube.com/watch?v=nTGG1NiF2MY) with red pixels.

Appearance

  • This manifests as certain pixels lighting up and flickering.

  • Even if the input signal isn't changing, you may see the pixels rapidly flicker.

  • Usually it will be a single color. It very often happens with the GREEN component of a pixel, but it can happen with RED (LESS COMMON) or BLUE (UNCOMMON).

  • You may notice that the pixels light up in vertical or horizontal stripes.

  • This problem is not related to "STUCK PIXELS". In this case, which pixels light up is dynamic and depends on what is shown on the display.

Sources of the problem

  • The ultimate source of the problem can be:

    • The display panel

    • The cabling (cables & ports)

    • The GPU that is sending the display signal

Cabling

  • This problem seems to be associated with the connection to the display and is often a cabling issue:

    • Sometimes the cable is bad

    • Sometimes the cable is sagging or stretched too tightly and can cause this problem as it puts pressure on the ports

    • Sometimes it is due to the ports the cable is using

    • It can occur with HDMI, DisplayPort, and USB-C cables/ports

Try

  • Use different cables.

  • Use a different port.

  • Use a different kind of port, for example, switch from HDMI to DisplayPort.

  • Test with another computer.

  • Check the refresh rate.

  • Test with a lower resolution.

  • If you are unable to resolve it, contact your manufacturer's support.

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