急，beryl装好后无法开启3D

qw55er

beryl我是通过网上介绍的安装的，没有出现问题，可是当我在终端里运行beryl-manager后，提示有问题，如下所示
debian:/# beryl-manager
debian:/# sh: glxinfo: command not found
红宝石是出现拉
我在红宝石里选beryl后终端显示如下
窗口管理器警告：丢失到显示“:0.0”的连接；
可能是 X 服务器已关闭或者您杀死/摧毁了
窗口管理器。
**************************************************************
* Beryl system compatiblity check                            *
**************************************************************

Detected xserver                                : NVIDIA

Checking Display :0.0 ...

Checking for XComposite extension               : failed

No composite extension
134544369 screens detected.
Currently we cannot guarantee that Beryl will work correctly with multiple X screens.
Using the --no-context-share command line option can help.
Please report any success to the beryl developer mailing list. The list can be found at lists.beryl-project.org
窗口管理器警告：last_user_time (3069994688) is greater than comparison timestamp (2584359578).  This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.  Trying to work around...
窗口管理器警告：0x181cabb (LinuxSir.O) appears to be one of the offending windows with a timestamp of 3069994688.  Working around...
我是菜鸟一个，情各位大虾帮帮忙