Ubuntu12.04root user logon settings

Ubuntu12.04root user logon settings ubuntu12.04 by default, root logon is not allowed. only common users and guest logon can be seen in the logon window. After logging on to Ubuntu as a normal user, we need to make some modifications. after a common user on www.2cto.com logs on, the system configuration file needs to be switched...
Ubuntu12.04 by default, the root user is not allowed to log on to ubuntu12.04. in the logon window, only common users and visitors can log on. After logging on to Ubuntu as a normal user, we need to make some modifications. after a common user on www.2cto.com logs on, the system configuration file needs to be changed to the superuser mode. in the terminal window, enter: sudo-s. enter the login password of a common user and press enter to enter the root user permission mode. run vi/etc/lightdm. conf. add greeter-show-manual-login = true allow-guest = false. the entire modified configuration file is [SeatDefaults] greeter-session = unity-greeteruser-session = effectugreeter-show-manual-login = true # manually enter the user name and password for logging on to the system allow- guest = false # Do not allow guest to log on to www.2cto.com. then we start the root account: sudo passwd root Enter the password of the roott account as prompted. Restart ubuntu. The "login" option will be available in the logon window. at this time, we can log on through the root account. Note: ubuntu12.04 uses the unity interface by default for different user experiences, but it is easier for me to use the gnome classic interface from the previous LTS version. First, install gnome shell and sudo apt-get install gnome-session-fallback. remember to select gnome (classic) on the right of the logon box, there are still many differences between gnome classic and 12.04 in 10.04: www.2cto.com supplement: modify vi/etc/lightdm. conf user-session = ubuntu ---> user-session = gnome-classic log on to the gnome classic interface by default. if no special effect is required, it is gnome-fallback, corresponding logon window options gnome classic (no effects) by yimiyangguang1314