fixing ubuntu keyboard problem

There is this time, when there is a application works, then suddenly it doesn't work anymore, it didn't hang, it just don't accept keyboard input anymore.

Turn out there is an solution.

First install scim-bridge

sudo apt-get install scim-bridge

then after installation, edit /etc/X11/xinit/xinput.d/scim as root

sudo gedit /etc/X11/xinit/xinput.d/scim

Find the line on with GTK_IM_MODULE
change it into

GTK_IM_MODULE="scim-bridge"

change the line with QT_IM_MODULE into

QT_IM_MODULE="scim-bridge"

then restart your computer. or the ctrl-alt-backspace trick would work too.