https://bugs.kde.org/show_bug.cgi?id=422844
Bug ID: 422844
Summary: Stuttering Plasma effects after the composer's
resumption
Product: kwin
Version: 5.19.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: domk...@wp.pl
Target Milestone: ---
SUMMARY
For example, when the MPV player is started in full-screen mode, the composer
are suspended. After the player returns to window mode, the composer are
resumed.
After that, all Plasma effects get stuttering.
If all opened app windows are maximized and again minimized, then Plasma
effects work smoothly again.
STEPS TO REPRODUCE
1. Run MPV video in window mode (Plasma effects work smoothly)
2. Switch MPV to full screen mode and back to window mode (after compositing
resume all animations stuttering)
3. (Optional) Maximize and again minimize all opened application windows -
Plasma effects work smoothly again
---OR---
1. Open few random apps
2. Press Alt+Shift+F12 to suspend compositions
3. Press Alt+Shift+F12 to resume compositions - now all Plasma effect
stuttering (especially visible at the desktop cube)
4.(Optional) Maximize and again minimize all open application windows - Plasma
effects work smoothly again.
OBSERVED RESULT
Animations of Plasma effects stuttering after pausing and resuming the
composition.
EXPECTED RESULT
All animations work smoothly as before pausing and resuming the composition.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.19.0
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0
Kernel Version: 5.7.2-arch1-1
OS Type: 64-bity
Processors: 8 × Intel® Core™ i7-4790K CPU @ 4.00GHz
Memory: 15,6 GiB RAM-u
Graphics Processor: GeForce GTX 980/PCIe/SSE2
Graphics drivers: nvidia 440.82-21 (proprietary drivers)
ADDITIONAL INFORMATION
The bug faced since the last update of KDE Plasma to version 5.19.0 and
previously, the bug didn't occur with the same graphics drivers and the older
KDE Plasma 5.18.5. (and older kwin)
For Intel iGPU's, this problem doesn't occur.
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