https://bugs.kde.org/show_bug.cgi?id=444420
Bug ID: 444420 Summary: XWayland server started by nested KWin Wayland reports incorrect refresh rate Product: kwin Version: 5.23.1 Platform: Archlinux Packages OS: Linux Status: REPORTED Severity: normal Priority: NOR Component: platform-wayland Assignee: kwin-bugs-n...@kde.org Reporter: satt...@pm.me Target Milestone: --- SUMMARY When using KWin Wayland, the XWayland server started by it will have the wrong refresh rate set. In my case it is 144Hz for a 240Hz monitor. For wayland itself, the refresh rate is correct. This bug can be seen when running XWayland apps as well, for example: Chromium and mpv (with xwayland) will report the display refresh rate as 143Hz. This can (and does) result in laggy, juddery experience. STEPS TO REPRODUCE 1. Start KWin Wayland 2. run xrandr or check X apps OBSERVED RESULT XWayland is set to the wrong refresh rate (144Hz in my case) EXPECTED RESULT XWayland refresh rate should be in sync with the Wayland one (240Hz) SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux 5.23.1 KDE Plasma Version: 5.23.1 KDE Frameworks Version: 5.87.0 Qt Version: 5.15.2 GPU: NVIDIA Turing ADDITIONAL INFORMATION -- You are receiving this mail because: You are watching all bug changes.