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I have an NVIDIA GTX 1630 card, with three screens connected to it.

A few months ago, one of my 3 screens started showing a colour aberration. It's more pronounced when f.lux is on.

It looks like thousands of little beacons. Does anyone know what the cause might be?

Screen of Concern

Normal Screen

  1. It does not show in screenshots.
  2. CTRL+WIN+SHIFT+B fixed it.
  3. After doing the above it has not happened again.
  4. My drivers are always current.
Rohit Gupta
  • 5,096

1 Answers1

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Since CtrlShiftWinB fixes the issue, and the only thing that keyboard shortcut does is discard the screen buffer and recreate it, then likely the issue is between the graphics chips and the monitor. To confirm this, switch cables at the monitor between the problematic monitor and another, and see if the issue now occurs on the one that was working well.

If a different monitor now shows the defect, then look to the cables and to the PC. For example, is video output through the same type of port (DVI, HDMI, etc.) for each display? Perhaps the PC has trouble with one port type, or a cable is bad.

If the monitor that had the issue still does, then it is possible the issue is elsewhere.

DrMoishe Pippik
  • 37,887