In IceWM in openSuse 13.2 on AMD hardware, ctrl-alt-del produces a dialog. I've
tried the Logout, Shutdown, Reboot, Window List, and About buttons. They
respond by highlighting themselves and the dialog goes away, but nothing
happens after that. I can't tell whether the Cancel button works. I didn't try
the other buttons. In order to log out or shut down, I need to use the main
menu > Logout, a terminal, or, if they were to fail, the computer's power
button. <https://bugzilla.opensuse.org/show_bug.cgi?id=905159> is possibly
related.