Fedora12 cannot log on to root or root for authorization recently

Recently, fedora12 was unable to log on to root or root for authorization-Linux general technology-Linux technology and application information. The following is a detailed description. [I = s] This post was last edited at, 915086731

I used to modify the two files, namely, the gmtr and the gmtr-password files. Previously, I was able to log on to the root user graphically. But I do not know why I cannot log on now (enter the root user name and password on the login page, press the login key, and I will immediately return to the login page ).
At the same time, root authorization is not allowed for common users. It seems that the root graphical function has been completely disabled. For example, if the root password is modified for a common user, the system will prompt you to enter the root password, but no prompt is displayed, error: "Not Authorized for action org. gnome. clockapplet. mechanisms. settime ". Similarly, for all root permission operations, you will be prompted to enter the root password before. If no prompt is displayed, the system will directly prompt "insufficient Permissions" to end. Which of the following experts will help you?


You can only su root and modify the system under the terminal.



The solution is to randomly modify the file access attribute in the/usr directory. I used to run chmod 777-R/usr at will, resulting in the above results. Change back to the original property, OK.
It should be the best answer.