[libvirt-users] OVMF / UEFI boot abnormally

Hey guys, today I use ovmf to start win10 guests, my monitor is not bright But is it normal for me to use seabios? why? The next message is my detailed settings. ovmf: os: <loader readonly='yes' type='pflash'>/root/OVMF_CODE.fd</loader> <nvram>/root/OVMF_VARS.fd</nvram> vga: <qemu:arg value='-device'/> <qemu:arg value='vfio-pci,host=01:00.0,romfile=/root/10de:1b06:19da:1474.dump,multifunction=on'/> bios: os: <loader readonly='yes' type='rom'>/usr/share/qemu/bios.bin</loader> vga: <qemu:arg value='-device'/> <qemu:arg value='vfio-pci,host=01:00.0,romfile=/root/us.dump,multifunction=on,x-vga=on'/> And this is my kvm environment: qemu: 2.12.0 libvirt: 4.14 kernel: 4.17.2 host: Lfs-8.2(as similar as ubuntu)