In order to log on with the root user, log on to the common user first, open the System tool, and enter the command su-enter the root password (if the password is not displayed, enter the password directly). enter the command: gedit/etc/pam. d/TPD & amp; comment out authrequiredpam_succeed_if.souser in the text editor! Rootquiet
In order to log on with the root user, log on to the system tool-terminal with a common user.
Enter the command: su-
Enter the root password (the password is not displayed at this time, enter it directly)
Enter the command: gedit/etc/pam. d/TPD &
Comment out "auth required pam_succeed_if.so user! = Root quiet "(add" # "before this line to change it to # auth required pam_succeed_if.so user! = Root quiet)
After saving the file, run the following command: gedit/etc/pam. d/TPD-password &
Also comment out "auth required pam_succeed_if.so user! = Root quiet.
Save and exit
Now you can use root to log on.