I set up two accounts in lubuntu 19.04. The same login image shows for both accounts every time lubuntu boots up and the name shows for neither account almost every time lubuntu boots up. See http://bit.ly/2YEm4Dc. The only way I see to determine which account is which is by trial and error, i.e., entering the password for one of the two accounts into the two essentially identical login prompts. Is there a way to customize the image that appears for each account?