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Linux CENTOS_126 2.6.32-279.el6.i686 #1 SMP Fri Jun 22 10:59:55 UTC 2012 i686 i686 i386 GNU/Linux

QEMU安装好了，但是用virt-manager连接时出现下面错误，折腾好几天了，都没有解决，求大神支招啊.

Unable to open a connection to the libvirt management daemon.


Libvirt URI is: qemu:///system


Verify that:
 - The 'libvirtd' daemon has been started




no connection driver available for 没有 URI qemu:///system 的连接


Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/connection.py", line 1154, in _open_thread
    self.vmm = self._try_open()
  File "/usr/share/virt-manager/virtManager/connection.py", line 1138, in _try_open
    flags)
  File "/usr/lib/python2.6/site-packages/libvirt.py", line 102, in openAuth
    if ret is None:raise libvirtError('virConnectOpenAuth() failed')
libvirtError: no connection driver available for 没有 URI qemu:///system 的连接

libvirt其实已经启动了

[/home/share/kvm/xen-4.1.2$] service libvirtd status
libvirtd (pid  14148) 正在运行...