>>>>>> Do you have any sudo call from your /etc or /etc/skel bashrc or profile...? >>>>> Yes, I do have in /etc/bashrc: >>>>> sudo -l >>>> Unless you already understood: >>>> su - "make the shell a login shell" >>>> so sudo -l in bashrc is executed, which asks for the user's password >>> Understood, who is asking - not understood why "sudo -l" is asking for >>> the password and why just hitting the enter key works >> sudo -l >> lists the commands that you are allowed to run with sudo > That is clear to me, but why does this command request the password? Do you have rootpw/runaspw/targetpw set in /etc/sudoers?