Here is a Debian bug report (that I can reproduce): I have a ThinkPad T42. This and many other models of ThinkPad have the NumLk key on Shift+ScrLk. (Why they didn't do that the other way around I don't know.) On a Linux console, pressing Shift+ScrLk toggles numlock. However, in X, pressing Shift+NumLk does not toggle numlock; instead, it starts a mode in which the numeric keypad keys control the mouse. Note that this occurs even in a bare X session with only xterm running. In order to make numlock work, I run this: xmodmap -e "keycode 77 = Num_Lock" Doing so makes numlock work as expected. According to <http://www.thinkwiki.org/wiki/How_to_get_special_keys_to_work#NumLock>, this issue applies to numerous ThinkPad models, including at least "the ThinkPad 600, T20, T21, T22, T30, X20, X21, X31, X40, T42p, T43, R51, R52". Thanks for considering.
Woops, I've already forwarded this one... I'll ask the reporter ;-) *** This bug has been marked as a duplicate of bug 14061 ***
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