https://bugs.kde.org/show_bug.cgi?id=497025
Bug ID: 497025
Summary: Wayland - Severe Stuttering When Giving Keyboard or
Mouse Input In Certain Apps
Classification: Plasma
Product: kwin
Version: 6.2.4
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: xwayland
Assignee: kwin-bugs-n...@kde.org
Reporter: nwesterv...@proton.me
Target Milestone: ---
Created attachment 176337
--> https://bugs.kde.org/attachment.cgi?id=176337&action=edit
EZ2ON Xprop Output
SUMMARY
When using Wayland, giving mouse / keyboard inputs to certain apps, like this
particular game after it's been running for about 1 hour and 15 minutes, causes
severe stuttering. The game in question is EZ2ON REBOOT: R, which is running
under xwayland and Proton. This is the only application and situation I've seen
this happen in, and I've noticed it for close to a month now.
In the journal output, you can see I opened the journal at 23:10:38 to check
what was going on. I believe the journal entries seen at 23:03:56 and 23:11:30
are being output whenever the problem occurs. Going further down the journal
you can see me opening and closing the journal while reproducing the problem
multiple times (I'm alt tabbing in and out of the game in between checking the
journal, giving the game mouse and keyboard input when the game's fullscreen
window has focus).
I also noticed that my CPU usage dropped slightly whenever I would hold a key
down on my keyboard (with the game focused) or rapidly moved my mouse over the
game's fullscreen window.
I've attached the xprop output for the game EZ2ON and the output of journalctl
(removing output from before I opened the game).
STEPS TO REPRODUCE
1. Open the affected application.
2. Give keyboard / mouse inputs.
OBSERVED RESULT
Application / system experiences severe stuttering.
EXPECTED RESULT
Application / system continues operating like normal.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux (kernel 6.12.1-arch1-1 (64-bit))
KDE Plasma Version: 6.2.4
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0
Graphics Platform: Wayland
ADDITIONAL INFORMATION
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