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Accepted
Rubi Shnol
Asked: 2020-02-26 13:21:28 +0800 CST

Weird screen glitch in Ubuntu (when black dominates)

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When I create, say, a fully black image and then zoom into it -- as far black starts dominating the screen -- it starts weirdly flickering.

For instance, doing this

Screen glitch

I see something like (and it keeps flickering):

enter image description here

What could that be?

gpu_burn (video memory test) gives no errors.

And, as you can see, the recorded video does not contain any glitches.

Specs: ASUS G750JW Laptop, GTX765M video card.

video video-player screen asus

1 Answers

  1. Best Answer

    It could be a hardware problem, or a video driver problem.

    To help eliminate a hardware problem...

    Boot with nomodeset, which will eliminate the video drivers as a concern. Screen resolution will be off, but retest using your black screen test, and see if the same problem occurs. If the problem still occurs, then you have a hardware problem.

    • Boot to the GRUB menu
    • Hit the e key to enter edit mode
    • Use the arrow keys and find the string "quiet splash"
    • Change it to "quiet splash nomodeset"
    • Hit CTRL+x, or F10 to continue booting

    This is a temporary setting and will only last until the next boot.

    Update your Nvidia video driver...

    You have version 390.116, and 418.88 is the current version for your GTX765M video card. Get the newer version at https://www.geforce.com/drivers.

    Note: Have good backups before installing the newer driver.

    Check your BIOS version...

    In the terminal app, type sudo dmidecode -s bios-version and note the version number. Version 210 is the current version, and can be downloaded from https://www.asus.com/us/ROG-Republic-Of-Gamers/ROG-G750JW/HelpDesk_BIOS/

    Note: Check your model # to verify that this is the correct ASUS web page.

    Note: Have good backups before installing the newer BIOS.

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