SUMMARY I'm not familiar with the nature of this error but I tried looking into it: (https://www.phind.com/search?cache=29983abd-db3c-4ebb-bf46-682f4dffd59c) and it appears the error might be related to a race condition? I'm under the impression that race conditions are difficult to pin down and that I don't know if this issue will be solved because of it, but I figured it's worth mentioning) since I don't know if the KDE Plasma telemetry setting reports it. STEPS TO REPRODUCE 1. Boot into KDE Plasma from SDDM 2. Enable "session restore" from last logout in System Settings 3. Open some windows if none are open already 4. Reboot 5. Login via SDDM again 6. Check journalctl OBSERVED RESULT This error in journalctl: kwin_x11[2835]: kwin_core: XCB error: 152 (BadDamage), sequence: 25996, resource id: 16778541, major code: 143 (DAMAGE), minor code: 3 (Subtract) EXPECTED RESULT No "kwin_core" x11/XCB errors in journalctl. SOFTWARE/OS VERSIONS Linux: Arch Linux - Kernel 6.3.8-273-tkg-pds (https://github.com/frogging-family/linux-tkg) KDE Plasma Version: 5.27.6 KDE Frameworks Version: 5.108.0 Qt Version: 5.15.10 GPU: NVIDIA GeForce RTX 2080 Ti GPU Driver Version: 535.86.05 ADDITIONAL INFORMATION N/A
Thanks, it's a perfectly harmless warning, from a stack below us. Telling us that we couldn't get a response to a query to a window because the client closed, something valid to do and handled fine. The warnings were turned off in Qt6