今天用VMvare登录Ubuntu，发现用户名密码正确的情况下，登录不进去，循环出现登录界面，但是guset可以登录，在网上查找资料，找到了解决的办法：
1、用putty登录管理员帐号
2、执行startx，提示一大堆的错误：
xiang@xiang-Ubuntu:~$ ls
board Documents examples.desktop Pictures Templates
Desktop Downloads Music Public Videos
xiang@xiang-Ubuntu:~$ startx
xauth: error in locking authority file /home/xiang/.Xauthority
xauth: error in locking authority file /home/xiang/.Xauthority
X: user not authorized to run the X server, aborting.
No protocol specified
No protocol specified
xinit: giving up
xinit: unable to connect to X server: Resource temporarily unavailable
xinit: server error
xauth: error in locking authority file /home/xiang/.Xauthority
3、执行sudo chown xiang /home/xiang/.Xauthority
解决问题