Password not working

I’m using Jetson Nano B version 4GB RAM, yesterday I can login succcessfully in Jetson but today I cannot able to login.
But I can able to login through Ctrl+Alt+F2, I mean through the terminal, I can able to login .
Kindly help me login in a proper way. Thank You in advance.

I am wondering if an update might have altered the GUI components in some way. A serial console boot log would probably show something, especially if you also monitored “dmesg --follow” after boot and tried to log in. For serial console setup see: