看很多人用xmanager远程登录管理centos7服务器，我参考了一下这里http://v.youku.com/v_show/id_XNTI1NTY0ODY4.html
的教程，其中远程图形化界面时总是不成功，我是这样做的
1,# init5

2,# gnome-session

到了第二步时

出现了如图所示的错误提示，这个如何解决呢

当然了，下在是命令中的提示喽

gnome-session

gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256
gnome-session-is-accelerated: No composite extension.
gnome-session-check-accelerated: Helper exited with code 256

(process:1510): WARNING : software acceleration check failed: Child process exited with code 1