搞定了spice的声音问题

弄了半天，其实spice没有声音不是因为spice本身的配置有问题，而是系统的声音服务权限问题。

Fedora 17不允许root从本地登陆winddows manager, 所以只能用普通用户来登陆。登陆后声音服务(PulseAudio)
所以是登陆用户权限的。

所以需要把qemu的权限先改一下， edit /etc/libvirt/qemu.conf

# The user ID for QEMU processes run by the system instance.
user = "MYLOGIN"

# The group ID for QEMU processes run by the system instance.
group = "MYLOGIN"

然后重启下libvirtd或者重启系统，用登陆用户执行spice客户端:

$ spicec -h localhost -p 5900

下面是我的spice配置:

<channel type='spicevmc'>
        <target type='virtio' name='com.redhat.spice.0'/>
</channel>

<input type='tablet' bus='usb'/>

<channel type='pty'>
    <target type='virtio' name='arbitrary.virtio.serial.port.name'/>
</channel>

<graphics type='spice' port='5900' autoport='yes'>
    <channel name='main' mode='insecure'/>
    <image compression='auto_glz'/>
    <clipboard copypaste='yes'/>
    <channel name='record' mode='insecure'/>
    <channel name='playback' mode='insecure'/>
</graphics>

 <video>
    <model type='qxl' vram='65536' heads='1'/>
 </video>