This seems to be chromium code: #10 0x000055f9442df03d in ui::X11EventSource::DispatchXEvents() () at ../../ui/events/platform/x11/x11_event_source.cc:140 #11 0x000055f94741e46c in XSourceDispatch() () at ../../ui/events/platform/x11/x11_event_source_glib.cc:41 So it does explicit calls to X11 functions - and thus almost obviously crashes on Wayland