[Qemu-block] Qemu guest display black after reboot

[Allence]

Hey, every friend. I have a question. My guests are not working, unbelievable.

I can use it the first time I use it. But after I close my guest and start over, my guests will not appear. My screen is black.

My environment:

  Guest: windows 10

  vm-bios: ovmf

  host: ubuntu 1604

  qemu: 2.12

  libvirt: 4.2

  kernel: 4.17.2

 

xml config:

  gpu:  

 <qemu:commandline>

    <qemu:arg value='-device'/>

    <qemu:arg value='vfio-pci,host=0000:01:00.0,romfile=/root/rom.file,multifunction=on,x-vga=on'/>

  </qemu:commandline>

features:

    <kvm>

      <hidden state='on'/>

    </kvm>