I upgraded my system from UbuntuStudio 16.04 to 17.10.
But... Now, when I want to enter to the system (log in) I can not to do it because system doesn't recognize my user account password!
I mean, I see the "Log in" screen, with my user name and waiting for my password, but... When I enter my password... The system goes to blank for 2 seconds and it comes back to the "Log in" screen again!
How can I fix this?