> For the complete documentation index, see [llms.txt](https://docs.sevenpens.com/drawtab/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sevenpens.com/drawtab/troubleshoot/tsg-pixel-noise-on-display.md).

# TSG: Pixel noise on display

## Photo Examples

![](/files/caQiedm2l1p1yLocnF7P) ![](/files/0d9KpbpEYDNiAKh9KCDk)

![](/files/FVWMukk4jfzlIeS2Sdt0)

## 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.