I'm in a hurry right now, so I cannot do a lot of searching, but these might be pointers: https://linustechtips.com/topic/1236089-odd-way-to-bypass-login-on-mi

I'm in a hurry right now, so I cannot do a lot of searching, but these might be pointers: https://linustechtips.com/topic/1236089-odd-way-to-bypass-login-on-mint/ https://linustechtips.com/topic/1236089-odd-way-to-bypass-lo... https://bugs.launchpad.net/ubuntu/+source/mate-screensaver/+bug/1768352 https://bugs.launchpad.net/ubuntu/+source/mate-screensaver/+... https://github.com/mate-desktop/mate-screensaver/issues/170 https://github.com/mate-desktop/mate-screensaver/issues/170 What I personally noticed is that when I plug/unplug an external monitor, Mint shows the desktop for half a second or so. I was even able to type stuff into an open termial in these moments. So it is clear that with some fiddling, it would be possible to construct a bypass from this. Doing some Google searches, I found similar (but not quite the same) open issues with Mints screen saver. That is when I decided to not use it anymore.