I note that you have installed: python3-dbus.mainloop.pyqt5 5.9.2+dfsg-1+16.04+xenial+build14 [origin: unknown]
which is a KDE Neon package. Using KDE Neon repositories on Kubuntu, or using Kubuntu packages on Neon is not supported, and is likely to cause errors such as this, so I am marking this bug as invalid. ** Changed in: kubuntu-driver-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1760304 Title: randomly crashed after log in to kde To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kubuntu-driver-manager/+bug/1760304/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs