Quote Originally Posted by joonro View Post
Thank you so much for this. I have been looking for how to do this as well. In my case, with certain settings in ~/.kde4/share/config/kwinrc which I have not been able to identify exactly, KDE just freezes upon login. I have to go to ctrl+alt+f1 and delete ~/.kde4/share/config/kwinrc and logout/login, and since KDE is unresponsive I could not log out, and I have been rebooting, which is a pain. $ init 3 -> $ init 5 worked like a charm!

-Joon
Have you tried Ctl-Alt-Backspace ?