I am running Ubuntu-MATE 18.04.4 LTS, and using MATE Terminal 1.20.0.
All of my existing terminal sessions are unresponsive to most keyboard input. Basically, I cannot type anything meaningful into them. For all other applications, my keyboard is working fine.
There are five keys on the keyboard that are working normally: /, *, -, +, and Enter -- but only from the numeric keypad (NumLock has no effect either).
I am able to paste commands into the terminals using either the middle mouse button or the menus. I tried running reset in an effected terminal, but this did not fix anything. There is also a Reset and Clear option in the terminal menu, but this simply hides the prompt and I can find no way to recover it. ctrl-C has no effect either.
When I open a new terminal with ctrl-alt-T, the new terminal suffers from the same defect. However, if I open a new terminal from the Mate menu, it works fine.
I plugged in a different keyboard (wired-USB) and the effect was the same when using the second keyboard.
The easy fix is to kill my existing terminal sessions and start fresh. I would prefer not to do that since I have many open terminal windows and tabs and I don't want to lose my state. Also, if there is a systemic problem, I would like to know how to deal with this in the future.
A few times in recent weeks, I have experienced similar problems with other applications (maybe Chromium-browser), so this may be related.
Is there a command or magic key sequence that might allow me to resume my existing terminal sessions?
