I've located the bug. Upstream report: https://code.google.com/p/ibus/issues/detail?id=1715
** Package changed: xorg (Ubuntu) => ibus (Ubuntu) ** Bug watch added: IBus bugs #1715 http://code.google.com/p/ibus/issues/detail?id=1715 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1263249 Title: [Input methods] Keyboard stops working after Ctrl+Shift+U followed by 7 alphanumeric keys To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/1263249/+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