I have an external monitor setup that works perfectly in Windows, but in Linux Mint, I get weird ghosting effects in the monitor.

The monitor is a DELL SP2309Wc with resolution of 2048 x 1152.

No ghosting when the mouse is on the laptop screen.

I am using an HDMI cable.

1 Answer 1


I can't leave comments yet, but is the screen connected via VGA or DVI? HDMI (Type B).

The problem may be elsewhere, but if you have different display ports and have a different cable, connect the screen just to check.

Try lowering the resolution, do you get any ghosting?

Try the recommendations for your screen Model from Dell:

enter image description here

  • HD 1080p has the same ghosting
    – FutuToad
    Mar 24, 2014 at 18:40
  • What brand model is screen (Dell ????) there may be some settings like refresh rate to check.
    – Tasos
    Mar 24, 2014 at 18:45
  • DELL SP2309Wc is the one
    – FutuToad
    Mar 24, 2014 at 18:48
  • Iv'e update my answer, can you try the recommendations from Dell (probably won't do anything) but never know.
    – Tasos
    Mar 24, 2014 at 18:59

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