Comment # 2 on bug 1171455 from Liang Yan

It seems EDID support for virtio-vgpu has been merged since QEMU-4.0, however
it is turned off by default.

@Ludwing Could you try again with "edid=on" from qemu command line. Also since
15.2 is about to expire, could you try on 15.3, thanks.