Graphics
Paravirtualized Graphics only work for Apple Silicon Macs. https://github.com/utmapp/UTM/issues/3491
Default QEMU VirGL backend on macOS is virtio-gpu-gl-pci.
On Intel Macs, UI will freeze after host recovers from sleep. If you’ve encountered this, switch back to virtio-gpu-pci.
macOS guest
macOS Installer can be downloaded with https://github.com/ninxsoft/Mist.
openSUSE guest
The installer requires a serial device. You can remove it afterwards. See https://github.com/utmapp/UTM/issues/5251.
Bridged network
Bridged networking may break IPv6 on host. Symptom is that the host is unable to receive neighbor solicitation messages from the router.
You can use the default shared network instead, which implements NAT66.