https://bugs.kde.org/show_bug.cgi?id=516037
--- Comment #1 from Kurzoczek <[email protected]> --- BUG DESCRIPTION: KWin Wayland crashes with a Segmentation Fault in the main thread (wl_event_loop_dispatch -> libffi). CRITICAL DETAIL: The crash occurs reproducibly approx. 10-12 seconds AFTER exiting the game application, during the session cleanup/resolution restore phase. It does NOT happen during gameplay. The system logs show no hardware hangs (GPU/Kernel are stable). However, the connected HDMI monitor has a known issue with Audio drivers (I/O timeouts on snd_hda_intel). The crash likely happens when KWin re-probes the faulty HDMI Audio endpoint after the game releases the display output. SYSTEM SPECIFICATION: OS: Debian GNU/Linux 13.3 (Trixie/Testing) Kernel: 6.18.8 (Custom build; Issue persists due to userspace logic error). CPU: Intel Processor N150 (Alder Lake-N) GPU: Intel Alder Lake-N [UHD Graphics] (Driver: i915) Mesa: 25.0.7-2 (Official Debian Trixie Main Repo) Audio: sof-rt5650 (Internal) + HDMI Audio (Faulty/Timeouts) DISPLAY TOPOLOGY: Output 1 (Internal): eDP-1 (Game Screen). Output 2 (External): HDMI-A-1 (Connected, Extended Mode). STEPS TO REPRODUCE: 1. Connect an external HDMI monitor (Extended mode). Note: The HDMI Audio endpoint on this device causes I/O delays in the kernel driver. 2. Launch a DX9 game (Call of Duty 4, AppID 7940) via Steam/Proton 10.0 on the Internal Laptop Display. 3. The game runs via XWayland (fullscreen). 4. Exit the game normally. 5. Wait approx. 10 seconds. 6. KWin crashes to SDDM during the resolution restore/cleanup phase. TIMELINE ANALYSIS (from logs): 11:18:03: Steam logs: Removing process... gameID 7940 (Game exits). 11:18:15: drkonqi-coredump-launcher: KWin Crashes. -- You are receiving this mail because: You are watching all bug changes.
