Finally found a solution: http://askubuntu.com/questions/598099/numpad-buttons-going-weird
dconf reset /org/gnome/desktop/input-sources/xkb-options or gsettings reset org.gnome.desktop.input-sources xkb-options The problem was: dconf read /org/gnome/desktop/input-sources/xkb-options ['keypad:future'] You can test the pain yourself with this command: dconf write /org/gnome/desktop/input-sources/xkb-options "['keypad:future']" And then try to use the calculator. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xkeyboard-config in Ubuntu. https://bugs.launchpad.net/bugs/1298668 Title: Numpad unusable on most applications To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xkeyboard-config/+bug/1298668/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp