Hello, I've been working on this issue for a while now and opted to try the forums. A web and forum search has been unsuccessful in rendering a resolution...
standard VMWare disk files (.vmdk, -flat.vmdk, etc.) over and ran them through "qemu-img convert" to convert them to qcow2 format. When booting up the VM, I get the Linux kernel options so it seems to be reading the disk file. But when it comes time to actually boot, it hangs ...
I just installed upgrades via apt full-upgrade and rebooted afterwards. Now i've got the problem that 3 vm's that are based of a template wont boot...