Hello,
I tried mule today, and noticed that keyboard keys do nothing on both my 32 and 64-bit Ubuntu Linux. I dug a little deeper, and found out that if I disable ibus, the Chinese and other languages input system, keyboard works in mule. So, I modified the mule startup script to not take advantage of multilingual keyboard input.
So now keyboard works in mule in a standard multilingual Ubuntu setup, and multilingual input works in other apps.
To make this work, insert this:
. /etc/X11/xinit/xinput.d/none
on a new line after the LD_LIBRARY_PATH line in mule.sh:
#!/bin/sh
cd data
export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH
. /etc/X11/xinit/xinput.d/none
...