An user cannot log in kali linux more than one time.

Hi everyone,

I just installed kali 2019.4 and everything was fine when i logged in the first time.But my screen went to green when I logged in next time. I have searched a lot, but cannot find my answer. So I tried to connect the terminal by " Ctrl+alt+F1" and created another user. It worked!! But only one time, the next time I used that user It came back a green screen. I am newbie to kali, please help me.

Thanks