According to this link the GNOME On-Screen Keyboard should be available for v12.04, but when I click the link there for GOK in Software Center
apt://gok, it tells me:
Not found There isn’t a software package called “gok” in your current software sources.
So, what repository do I need to enable (and the command[s] to add it) in order to install GOK?
I want to try that on screen keyboard instead of the default "Onboard", because Onboard won't show me which key[s] is/are being pressed on the physical keyboard.