I see kactivitymanagerd crash with a segmentation fault in QXcbConnection::processXcbEvents() from time to time when logging out, and Fedora's Bugzilla shows I am not the only one experiencing this issue (CC list with 63 users): https://bugzilla.redhat.com/show_bug.cgi?id=1551038 Please see the fedora bug report for strack-traces and crash information. I am using Fedora 27 with kactivitymanagerd-5.11.5-1.fc27.x86_64
It appears you may have linked the wrong bug, that one talks about dolphin . ??
Indeed, sorry - this is the bug I was talking about: https://bugzilla.redhat.com/show_bug.cgi?id=1537282
Can you test with 5.12? David made some changes to kamd shutdown.
Clemens, were you able to try Plasma 5.12?
seems ot be fixed, I haven't seen those issues after upgrading to 5.12
Thanks for the update; closing.