I'm having the same problem with KUbuntu Breezy Badger, but I don't get the "unbind key" errors in Xorg logs when it happens.
When it occures (1) I cannot ctrl-alt-fn to switch virtual terminals (2) Only one of my lock keys works (f-lock) - scroll lock, num lock and caps lock don't. By 'works' I mean the LED on my keyboard toggles when I hit the button. This behaviour continues if I unplug and replug my keyboard. (3) Mouse works fine As with Alex, ctrl-alt-del doesn't work, although I am able to manipulate windows with the mouse (so I can go into k-> end session as a workaround). I'm certainly willing to provide whatever logs/hw info might be useful. The keyboard's a Microsoft Natural Ergonomic Keyboard 4000 v1.0 (USB). I can't reproduce with any particular scenario, but this occurs perhaps 4-8 times a week for me. -- Random keyboard failure in X https://launchpad.net/bugs/58884 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
