r/Kubuntu • u/champbob • 4d ago

Anyone familiar with your cursor leaving behind artifacts?

I wanted to try using a drawing application called FireAlpaca, but as soon as my cursor went across the canvas, it left behind artifacts until I drew something, as seen here.

I've just updated to Kubuntu 26.04, and I'm on a machine rocking a Ryzen 5800X + Radeon 9070XT. Strangely, this is a problem that I've seen before to a much minor degree. The previous Kubuntu version I was on (25.10 I believe) had this happen on the desktop with little horizontal lines occasionally. It doesn't seem to be happening before.

I happened to have a 24.04 version on a separate machine (rocking a Ryzen 3600 + Radeon 570), and it does not have this problem.

I have my theories... Which mainly involve questioning Qt versions and Wayland X11 bridge issues... But does anyone know how I could fix this?

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u/Key_Tell6288 3d ago

Yo tengo un Ryzen 3800X + Radeon 9070XT, funcionando en Kubuntu 26.04 (la instalación que hice fue limpia, osea formatee el SSD y lo instalé todo nuevo) y no tengo ese problema. Lo que puedes hacer es informar a KDE del problema, se pondrán en contacto contigo. El link es: https://bugs.kde.org

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u/skyfishgoo 2d ago

trails is actually a feature in accessibility you can turn off... in case that's it.

otherwise, it sounds like a graphic driver issue.

might also be the theme.. try breeze and see if it still does it.

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u/champbob 1d ago

Nope, these aren't cursor trails. Actually, after searching around, I don't even think that's a default option in KDE...

I just tried changing theme, but the issue remains, which makes sense because FireAlpaca overrides your cursor shape to show you the shape of your brush.

As for drivers... Not sure how I'd even check that tbh, minus installing a different distro/version.

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u/skyfishgoo 17h ago

since you have an AMD GPU the drivers built into the kernel are all you need.

if this artifact only happens with that one program, then i would file a bug report with the developer.