Keyboard failure on boot fix

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Once you are logged in, we need to once again turn on the screen keyboard. You can enable it by clicking on the Accessibility or Human icon on the top-right corner. Step 1: In this case, log in to the system with the help of the screen keyboard. Case 2: Keyboard not working but Mouse working on Lock Screen If you have the keyboard and trackpad both working on the lock screen, you can directly launch a terminal session by pressing Ctrl + Alt + F3 and skip to this step.

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Case 1: Keyboard and Mouse both working on Lock Screen So, here is how you fix the keyboard not working after updating your Ubuntu. But since the keyboard is not working in the first place, this gets a bit tricky. You can easily fix this by re-installing the input X Server’s driver again.