Created attachment 56869 [details] backtrace I just upgraded from kde 4.5.5. Since then kded4 crashes on login and on manual invocation. Seems to be related to synaptiks: guido@schmidt:~> kded4 Object::connect: No such signal QDBusAbstractInterface::StateChanged(uint) kded(16040) synaptiks::Touchpad::findTouchpad: device properties unsupported KCrash: Attempting to start /usr/bin/kded4 from kdeinit sock_file=/home/guido/.kde4/socket-schmidt/kdeinit4__0 kded(16039): Communication problem with "kded" , it probably crashed. Error message was: "org.freedesktop.DBus.Error.NoReply" : " "Message did not receive a reply (timeout by message bus)" " KCrash: Application 'kded4' crashing... KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit sock_file=/home/guido/.kde4/socket-schmidt/kdeinit4__0 guido@schmidt:~> QSocketNotifier: Invalid socket 13 and type 'Read', disabling... After I uninstalled the synaptiks-package I got the following: guido@schmidt:~> kded4 Object::connect: No such signal QDBusAbstractInterface::StateChanged(uint) kded(7818) Kded::loadModule: Could not load library "kded_synaptiks" . [ "Das Modul „kded_synaptiks“ für die Anwendung „kded“ kann nicht gefunden werden." ] KCrash: Attempting to start /usr/bin/kded4 from kdeinit sock_file=/home/guido/.kde4/socket-schmidt/kdeinit4__0 kded(7817): Communication problem with "kded" , it probably crashed. Error message was: "org.freedesktop.DBus.Error.NoReply" : " "Message did not receive a reply (timeout by message bus)" " KCrash: Application 'kded4' crashing... KCrash: Attempting to start /usr/lib64/kde4/libexec/drkonqi from kdeinit sock_file=/home/guido/.kde4/socket-schmidt/kdeinit4__0 QSocketNotifier: Invalid socket 13 and type 'Read', disabling... -- Information about the crash: The crash can be reproduced every time.
To be sure the crash is caused by synaptiks, please add the backtrace. For more information, see http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports
Sorry, it looks like the attachments not loading is a bugs.kde.org error. If this problem is resolved, we will look at the backtrace.
The crash is caused by the Wacom tablet kded module. Please install a newer version of kcm_wacom. *** This bug has been marked as a duplicate of bug 252743 ***
Thanks for your help, Christoph. I only watched at error-messages on the console and therefore thought it was a different bug. I going to look at the backtraces too next time.