Every so often when using PyCharm Community Edition with IdeaVim in Ubuntu 13.10, the keyboard stops accepting input and I have to restart the IDE. The cursor still moves when I click different text areas, but I can't type anything even after pressing escape multiple times. The keyboard works fine outside of the IDE, so I suspect it is an issue with either my use of IdeaVim or IdeaVim itself.
Is there anything I can do to prevent this from happening?
You can do killall -9 ibus-x11 as described in the issue given by Games Brainiac. I just wanted to note that you don't need to restart the IDE, as it should continue to work again... which is nice, undo-history is preserved etc. :)
This is very likely a bug. Please vote for this issue -> http://youtrack.jetbrains.com/issue/VIM-759
I have the same problems, i reported it and still do not know of a fix for it. I noticed there are a lot of reported issues like this but i now tried to follow this bug's suggestions:
https://youtrack.jetbrains.com/issue/IDEA-78860
"Alternatively, you can turn off IBus at System Settings | Language Support | Keyboard input method."
After I done this and a system restart, i never had the problem again.
Either upgrade IBus to version 1.5.11 or add export IBUS_ENABLE_SYNC_MODE=1 to your ~/.profile, then restart a session.
来源：https://stackoverflow.com/questions/23294884/pycharm-with-ideavim-occasionally-makes-the-keyboard-unresponsive