This is a clone of https://bugs.gentoo.org/show_bug.cgi?id=401155 The .xsession-errors file size grows up fast due to thousandf of lines like : "/usr/bin/kactivitymanagerd(4087)" Soprano: "org.freedesktop.DBus.Error.ServiceUnknown - The name org.kde.nepomuk.services.nepomukstorage was not provided by any .service files" QObject: Cannot create children for a parent that is in a different thread. (Parent is Soprano::Client::LocalSocketClient(0x940203c), parent's thread is QThread(0x93217d0), current thread is RankingsUpdateThread(0x9448e08) "/usr/bin/kactivitymanagerd(4087)" Soprano: "QLocalSocket::connectToServer: Invalid name" "/usr/bin/kactivitymanagerd(4087)" Soprano: "org.freedesktop.DBus.Error.ServiceUnknown - The name org.kde.nepomuk.services.nepomukstorage was not provided by any .service files" "/usr/bin/kactivitymanagerd(4087)" Soprano: "Unsupported operation (2)": "Invalid model" "/usr/bin/kactivitymanagerd(4087)" Soprano: "org.freedesktop.DBus.Error.ServiceUnknown - The name org.kde.nepomuk.services.nepomukstorage was not provided by any .service files" "/usr/bin/kactivitymanagerd(4087)" Soprano: "Unsupported operation (2)": "Invalid model" "/usr/bin/kactivitymanagerd(4087)" Soprano: "Unsupported operation (2)": "Invalid model" "/usr/bin/kactivitymanagerd(4087)" Soprano: "Invalid iterator." The message can not be disabled by kdebugdialog.
PS. This occurs only if nepomuk services are compiled in, but disabled in the user configuration.
*** This bug has been marked as a duplicate of bug 293536 ***