[求助]关于xgl的问题！

wsw

最近安装了xgl，我用的是gentoo，是按照wiki上的howto安装的，但是我一运行就有问题：
［localhost wsw # ］LD_LIBRARY_PATH=/usr/lib/opengl/xorg-x11/lib/ DISPLAY=:1 compiz gconf
compiz: SmcOpenConnection failed: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed
compiz: Couldn't open display :1

［localhost wsw # ］Xgl :1 -ac -accel glx:pbuffer -accel xv
_XSERVTransSocketOpenCOTSServer: Unable to open socket for inet6
_XSERVTransOpen: transport open failed for inet6/localhost:1
_XSERVTransMakeAllCOTSServerListeners: failed to open listener for inet6
X Error of failed request:  BadLength (poly request too large or internal Xlib length error)
  Major opcode of failed request:  142 (GLX)
  Minor opcode of failed request:  1 (X_GLXRender)
  Serial number of failed request:  94
  Current serial number in output stream:  95
也不知道是什么原因，我是用的Intel 855GM的集成显卡，我知道xgl是高度不成熟的，只是支持某些硬件，不知道有没有像我一样的硬件的朋友安装成功？

我的驱动全部装好了，DRI也打开了。