Created attachment 825241 [details]
Screenshot of boot failure

I am running Tumbleweed 20191128 on an x86-64 system. I want to install a
ppc64le virtual machine from the ubuntu-18.04.3-server-ppc64el.iso DVD image.
When I try this using virt-manager, the DVD fails to boot with a message about
'Not a bootable device!' ; see attached screenshot.
virt-manager works properly for this under OpenSUSE Leap 15.1 . Also
qemu-system-ppc64 -cdrom ubuntu-18.04.3-server-ppc64el.iso -m size=1024
boots as far as the ubuntu installer, but this system has no virtual disk so I
cannot install with it. Also this command seems to take 2 passes through the
grub menu before it boots.
To reproduce the problem, install the 'kvm' virtualisation software and the
'qemu-ppc' package. Then virt-manager 'create a new virtual machine' offers an
architecture option ppc64le and a machine type pseries. Point it as the
ubuntu-18.04.3-server-ppc64el.iso file which is downloadable from
http://cdimage.ubuntu.com/releases/18.04/release/ubuntu-18.04.3-server-ppc64el.iso
.

Tumbleweed worked for this about a year ago; between then and now, qemu has
changed from v3 to v4.