I'm not sure since when I'm getting this, but probably since I upgraded to Qt 5.5. (Although there were 2-3 weeks in between where I can't remember any crashes) Current version of KF5 is 5.13.0, built today, but it happened before. I can't figure out how to trigger this one, it seems to happen randomly after 2-10h (so I don't see it everytime I use my computer). When crashing, it actually takes the X server with it somehow, so I get to relogin... I guess I don't need to mention that this is getting annoying. ;) Reproducible: Sometimes Versions: Qt: 5.5.0 (since 19th July) KF5: 5.13.0 (happened with 5.12.0 as well) Plasma: 5.3.2 (happend with 5.3.1 as well)
Created attachment 94049 [details] crash output from journald
This is a Qt bug. Activity manager can not crash X since it does nothing with it. This crash happens (on some systems) when something requests kactivitymanagerd to quit and Qt tries to delete something (SQL plugins and connections as seen in the linked report) in the wrong order. *** This bug has been marked as a duplicate of bug 348194 ***