Buddy, I am a noob in libvirt develop.

When I want to create a domain by using virDomainDefineXML and displays a window on the host desktop. But when I add the line

" <graphics type='sdl' display=':0.0'/>" into the config xml file, the error as below will happen.

libvir: QEMU error : internal error process exited while connecting to monitor: Could not initialize SDL(No available video device) - exiting

when I delete " <graphics type='sdl' display=':0.0'/>",I can create the domain normally. Who can help me?!

The config xml file is as below:

<domain type='qemu'>

<name>qemu_ubuntu_01</name>

<memory>219200</memory>

<currentMemory>219200</currentMemory>

<vcpu>2</vcpu>

<os>

<type arch='x86_64' machine='pc'>hvm</type>

<boot dev='hd'/>

<boot dev='cdrom'/>

</os>

<devices>

<emulator>/usr/bin/qemu</emulator>

<disk type='file' device='cdrom'>

<source file='/root/Downloads/ubuntu-11.04-desktop-amd64.iso'/>

<target dev='hdc' bus='ide'/>

<readonly/>

</disk>

<disk type='file' device='disk'>

<source file='/var/lib/libvirt/images/winXP.img'/>

<driver name='qemu' type='raw'/>

<target dev='hda'/>

</disk>

<video>

<model type='cirrus' vram='9216' heads='1'>

<acceleration accel3d='yes'/>

</model>

</video>

<interface type='bridge'>

<mac address='52:54:00:d8:65:c9'/>

<source bridge='virbr0'/>

</interface>

<input type='mouse' bus='ps2'/>

<graphics type='vnc' port='10' listen='127.0.0.1'/>

<graphics type='sdl' display=':0.0'/>

</devices>

</domain>