出现了一个莫名其妙的东东，在线等待！！！！

muraji

把你的/etc/passwd的第一行改成：
root::0:0:root:/root:/bin/bash
再试试用root登陆

eagel

我是/etc/pam.d/su 如下：

#%PAM-1.0
auth       sufficient   /lib/security/$ISA/pam_rootok.so
# Uncomment the following line to implicitly trust users in the "wheel" group.
#auth       sufficient   /lib/security/$ISA/pam_wheel.so trust use_uid
# Uncomment the following line to require a user to be in the "wheel" group.
#auth       required     /lib/security/$ISA/pam_wheel.so use_uid
auth       required        /lib/security/$ISA/pam_stack.so service=system-auth
account    required        /lib/security/$ISA/pam_stack.so service=system-auth
password   required        /lib/security/$ISA/pam_stack.so service=system-auth
session    required        /lib/security/$ISA/pam_stack.so service=system-auth
session    optional        /lib/security/$ISA/pam_xauth.so

我的system-auth

#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authconfig is run.
auth        required      /lib/security/$ISA/pam_env.so
auth        sufficient    /lib/security/$ISA/pam_unix.so likeauth nullok
auth        required      /lib/security/$ISA/pam_deny.so

account     required      /lib/security/$ISA/pam_unix.so

password    required      /lib/security/$ISA/pam_cracklib.so retry=3 type=
password    sufficient    /lib/security/$ISA/pam_unix.so nullok use_authtok md5 shadow
password    required      /lib/security/$ISA/pam_deny.so

session     required      /lib/security/$ISA/pam_limits.so
session     required      /lib/security/$ISA/pam_unix.so

eagel

我在这里等了三天了，大家给我个说法，
我好痛苦啊！！！！！！！
我死定了~！

linky_fan

auth sufficient /lib/security/$ISA/pam_rootok.so

把这行注释掉试试