A vibrating password field first appeared in Mac OS, making it one of Apple's many bad ideas. It is pointless because the fact that the lockscreen is still visible suffices as visual feedback that the password was wrong. It is not something critical, so there is no need to grab attention. All this effect does is rubbing it in your face. No one really likes it, but it is a tolerable annoyance.
Luckily, customization is what sets Linux apart from proprietary operating systems. So here is how you can turn it off:
Open the
unlock.py file using the text editor of your choice, with root permissions, for example:Code: Select all
sudo nano /usr/share/cinnamon-screensaver/unlock.py
if self.bounce_count < 6 to 0. The vibration effect will immediately disappear. No rebooting required.
Enjoy.