In order to enter in commands, you may need to boot into recovery mode
From the Recovery Menu, arrow key down to Root - Drop to Prompt
tap enter
Then run in terminal:
sudo apt remove xserver-xorg-input-all
Once complete, reboot and test.
In order to enter in commands, you may need to boot into recovery mode
From the Recovery Menu, arrow key down to Root - Drop to Prompt
tap enter
Then run in terminal:
sudo apt remove xserver-xorg-input-all
Once complete, reboot and test.