*** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports Please remove this comment after reading and before submitting - thanks! *** SUMMARY massive tearing in games since plasma 6.2.4 STEPS TO REPRODUCE 1. Updatet the Arch Linux an Manjaro Linux with KDE Plasma and Wayland 2. Startet a Game (any) 3. Look around OBSERVED RESULT Screen Tearing in 8 testet Games, but only with wayland, no tearing with x11 EXPECTED RESULT No Screen Tearing, didnt have one with older versions of KDE Plasma SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.2.4 KDE Frameworks Version: 6.8.0 Qt Version: 6.8.0 Kernel Version: 6.12.1-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 32 × AMD Ryzen 9 7950X3D 16-Core Processor Memory: 62.0 GiB of RAM Graphics Processor: AMD Radeon RX 7900 XTX
found out kwin produce the issue, downgraded to 6.1.5 fixed it as workaround
I am on Fedora and I don't experience any problems. I will test and bisect in VM.
the most tearing produced in "Star citizen" its also my main game i attach an txt file from inxi output.
Created attachment 176313 [details] inxi
after a litle bit of testing only 6.2.4 have the teraing issue, 6.2.3 have no tearing
In 6.2.4, tearing support was fixed, so this is expected. If you turn off the "allow tearing" option in display settings or enable vsync in the gamds, does it go away?
i testet it with kwin 6.2.4 and the "allow tearing" option is not set, with vsync and without, games have tearing. i switched back to 6.1.5 and tearing is gone. is there a debug or a log to find out why this happen? tearing without vsync: https://youtu.be/Jc52TH3o4Yw tearing with vsync: https://youtu.be/mPMY8_kT1eE
Created attachment 176590 [details] allow tearing not set
No tearing with Kwin 6.1.5, it doesn't matter if VSync is on or off, or if the 'allow tearing' option in the display settings is enabled https://youtu.be/Bznilvr6cgY
It seems that the option isn't applying immediately. If you turn "allow tearing" off, then log out and log in again, does it go away then?
After many restarts and turning on and off the "allow tearing" now tearing is gone in full-screen and borderless mode, no idea why, and it doesn't matter now if the setting is on or off
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