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Since a few days, I'm seeing strange artifacts in Kubuntu 20.10 on both of my monitors. See https://imgur.com/a/pd2ZgHY for two examples. Because I'm seeing it on both of my monitors and only while using Ubuntu (not Windows), I guess it is a software issue. Some info:

  • Operating System: Kubuntu 20.10
  • KDE Plasma Version: 5.19.5 KDE
  • Processors: 4 × Intel® Core™ i5-3470S CPU @ 2.90GHz
  • Memory: 15,5 GiB of RAM Graphics Processor:
  • Mesa DRI Intel® HD Graphics 2500

Let me know if more info is required.

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  • 1
    Edit your question and show me uname -r and ls -al /boot.
    – heynnema
    Apr 28 at 21:28
  • 1
    Kernels 5.8.0-49 and -50 are at fault. Boot to -48.
    – heynnema
    Apr 29 at 12:51
  • Indeed, I'm at 5.8.0-50-generic. I'll try and report back.
    – Ruben
    Apr 29 at 17:50
  • 1
    Edit your question and show me ls -al /boot. How did you reinstall -48? Start comments to me with @heynnema or I'll miss them.
    – heynnema
    Apr 29 at 19:01
  • 1
    See my answer at askubuntu.com/questions/1333025/…
    – heynnema
    May 2 at 16:27
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Solved by @heynnema in answer https://askubuntu.com/a/1333040/1282, many thanks!

Briefly,

sudo apt install linux-headers-5.8.0-48 linux-headers-5.8.0-48 linux-image-5.8.0-48-generic linux-modules-5.8.0-48-generic linux-modules-extra-5.8.0-48-generic
sudo update-initramfs -c -k 5.8.0-48-generic
sudo update-grub
reboot

Solved my issues for now, until -51 is available.

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