I have found a thread discussing Nvidia driver problems, https://bugs.launchpad.net/ubuntu/+source/kdebase/+bug/335879
After upgrading to 180.37 driver (using URLs provided in the thread mentioned above) I don't see the problem anymore - logout/shutdown works perfectly. It seems that Nvidia driver 180.35 had broken signal processing. Alex -- KDE does not always logout/shutdown/reboot successfully https://bugs.launchpad.net/bugs/325543 You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to kdebase in ubuntu. -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs