I ran into this just now myself. It's pretty confusing. If I didn't find the AskUbuntu entry http://askubuntu.com/questions/56170/unity-hotkey-for-minimizing-current-window I wouldn't have known to disguish key 0 from KP0. Now that I know, it makes sense. But I think the 'Keyboard' control panel should report 'Minimize Window' as Ctrl-Alt-KP0, not Ctrl-Alt-0. If X Input disguises them as different keys, then it should tell the user that's inportant.
So I don't think this one's Invalid. It may perform as you expect, but that's only once you have the right expectations.
I ran into this just now myself. It's pretty confusing. If I didn't find the AskUbuntu entry http:// askubuntu. com/questions/ 56170/unity- hotkey- for-minimizing- current- window I wouldn't have known to disguish key 0 from KP0. Now that I know, it makes sense. But I think the 'Keyboard' control panel should report 'Minimize Window' as Ctrl-Alt-KP0, not Ctrl-Alt-0. If X Input disguises them as different keys, then it should tell the user that's inportant.
So I don't think this one's Invalid. It may perform as you expect, but that's only once you have the right expectations.