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I have got a really weird problem. When I scroll a web page, look through images really fast with right arrow held or render something with OpenGL on high fps, I have got this flickering horizontal line at the center of the screen or a little bit lower. It feels like the system cannot handle redrawing of large amounts of changing pixels, change buffers quickly or something along those lines.

I have just installed Ubuntu 18.04 MATE, 410 NVIDIA driver and apart from that the system is clean. I can't figure out how to fix this and why this is happening. Oh, and one last thing - I have got GeForce GTX Titan Black, maybe this has something to do with the problem.

2 Answers 2

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Okay, looks like I figured out how to fix this. Maybe it will help someone.

  1. Go to NVIDIA X Server Settings application.
  2. Choose X Server Display Configuration.
  3. Click Advanced.
  4. Check Force Full Composition Pipeline.
  5. Apply.
  6. Probably restart the system.

I have tried every single option suggested here on stackoverflow with compizconfig-settings-manager, /etc/X11/xorg.conf, e.t.c. but noting seemed to work for my issue.

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    This solved my problem, thanks! Tbh I was surprised I even found any results with "linux line in middle of screen while scrolling" lol
    – Matt Corby
    Sep 4, 2019 at 0:19
  • @MattCorby I'm glad it helped. It's a temporary solution though, you'll have to do this routine from time to time. At least on my system it is.
    – Denis
    Sep 13, 2019 at 10:15
  • Yes I have to do this everytime I reboot. You can create an X config file through NVIDIA X server settings but I haven't figured out where i'm supposed to put it yet so that it loads on startup.
    – Matt Corby
    Sep 18, 2019 at 13:03
  • This solved the issue, but after I saved it and rebooted only the second monitor was working, I had to delete Xorg settings and it started working again but I had the same problem again.
    – SadSeven
    Apr 15, 2022 at 7:20
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I solved this problem by setting window manager to Marco (Compton GPU compositor).

enter image description here

See this link for more information.

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