Why sudo command is not working on my fresh debian installation. I had this error after entering my root password:

Sorry try again ..

or / and

incorrect password attempt

EDIT : In my /etc/sudoers, I have the default content :

# This file MUST be edited with the 'visudo' command as root.
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
# See the man page for details on how to write a sudoers file.
Defaults    env_reset
Defaults    mail_badpass
Defaults    secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL:ALL) ALL
myuser ALL=(ALL:ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d

I am sure that I am typing the right password.


When the system locks the screen, I can't log in. This is the auth log:

polkitd(authority=local): Unregistered Authentication Agent for unix-session:/org/freedesktop/ConsoleKit/Session8 (system bus name :1.124, object path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)
  • 2
    You are in the sudo group? – wurtel Dec 1 '14 at 13:45
  • @wurtel presumably the myuser negates the need for that. – muru Dec 1 '14 at 13:46
  • Ah, I didn't look at the contents as you wrote that the default contents were in the file... apparently not. You did use visudo to edit it? Check /var/log/auth.log for hints. – wurtel Dec 1 '14 at 13:48
  • I am in the sudo group and I the content of sudoers is not exatly the same (format, comments ..etc= but the configuration is the same. – 4m1nh4j1 Dec 1 '14 at 13:50
  • 1
    You need to enter your own password - not root with sudo. – garethTheRed Dec 1 '14 at 14:24

sudo command requires password of current user, not root user. If you wish to authorize by root password you can just use su -.

  • I know and anyway my root password is the same as "myuser" password. sudo command is not working and su - is working, this is my problem. – 4m1nh4j1 Dec 2 '14 at 7:48

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.