Today I upgraded to 18.04 from 16.04. Everything seemed to work fine, I only had to redo some settings. One of these is that I remap some keys, e.g y to z and vice versa.

After a reboot the keyboard stopped working. I found out that the super key is stuck. Pressing l, for example, locks the screen. Unfortunately, enter is affected as well, making it impossible to c&p commands into terminal.

On top of that, there's a bug restricting visual keyboard to few apps only.

What can I do to unlock the super key? Might it be that changing the key mapping caused the issue?

  • Same issue here! – aIKid Jan 8 '19 at 9:09
  • The issue might come from the Num Lock being turned on, pressing Fn + ScrLk fixes it. Refer to askubuntu.com/questions/55898/… – aIKid Jan 8 '19 at 9:20
  • Unfortunately I can't test this anymore since I downgraded again. But maybe @aIKid can test this? – MERose Jan 8 '19 at 22:52
  • Welcome to AskUbuntu! Get some canned air and try to blow any unwanted particles out of your keyboard. Sometimes a stuck key is just that. How did you change the key mapping? Please edit that info into your post. Thank you for helping us help you! – Elder Geek Jan 14 '19 at 20:11

This might be a dirty hack, but remove your keyboard and restart your computer. Now plugin another keyboard, login and then you can check your mapping.

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