Malformed cursor in Plasma Wayland after 5.19 upgrade

After updating Manjaro to the latest via Pamac and switching to the 5.19 kernel, I see a sort of extended, ghostly mouse cursor with extra background in the Plasma Wayland session. Logging into the Plasma X11 session doesn’t show the issue. I also tried going back to the 5.18 kernel, but that didn’t help either. I’m guessing some update in the graphics stack is at fault. It wasn’t a problem with earlier versions of KDE Plasma et al, but I can’t say which versions as I wasn’t paying attention when it was working fine.

A screen capture in spectacle also doesn’t show the issue; the cursor looks fine there. So I’m reduced to taking a photo with my cell phone:


I show some text from Info Centre as a comparison for scaling.

Info Centre says this:

Operating System: Manjaro Linux
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.97.0
Qt Version: 5.15.5
Kernel Version: 5.19.7-1-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7 CPU 950 @ 3.07GHz
Memory: 7.8 GiB of RAM
Graphics Processor: AMD RV770

There is also a bunch of information from Graphics → Wayland I could paste in if it would help.

I’d appreciate any pointers to help debug this issue, including if this is the right place to report it or not.

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Hi @gssdu, and welcome!

I’m no expert, by any stretch of the imagination, but this:

…seems to be an explanation. And indeed, this:

Seems to confirm it.

Another thing that might be a reason is Plasma 5.25, since it’s riddled with bugs.

In both instances, I think you’re out of luck and will have to wait until it’s fixed, or the next Plasma is release and maybe fixes it.

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My suggestion to such issues is the usual

  • remove all customized plasma packages / plasmoids etc
  • remove all custom theming packages
  • reset all your customization to default Plasma Breeze including desktop

The reaoning behind is simple - if you apply 3rd party themes - you are in the danger zone of breaking functionality as those themes may not match upstream KDE - they may even be unmaintained - like the ones you find on kde look.

The trick to Plasma stable across updates is to keep as close to upstream as possible - apply as few customizations as possible.

Of course - if you have made no such customization … I have no idea.


Yes, well, the only customisation I’ve made is to change the wallpaper. No themes or anything.

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This seems to be common with very old GPUs, they handle some part of our new cursor image rendering (which uses the GPU instead of the CPU) badly. Should hopefully be fixed with 5.26

Well, that would be the case here (ATi Radeon HD4870). Thanks for the bug pointer; I will check when I get 5.26.

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