Comment 24 for bug 1915063

I started my tests on 21.04 Hirsute as that is what I had around.
qemu 1:5.2+dfsg-6ubuntu2 virt-manager 1:3.2.0-3 ovmf 2020.11-2
That started up the installer just fine no matter if I used SATA or virtio for the root disk.

Next I tried Focal (as reported)
qemu 1:4.2-3ubuntu6.14 virt-manager 1:2.2.1-3ubuntu2.1 ovmf 0~20191122.bd85bf54-2ubuntu3.1
That also started the windows installer without an error.

Therefore I can't confirm your issue (yet) and will set this to incomplete.
Have you in the meantime found more details about what exactly makes the issue trigger/pass for you?

In regard your further comments and for clarification:
- @Mark: I don't have a Ryzen based processor thou, so your case could still be absolutely
  valid, yet I can't confirm/deny at the time. Do you have any more data showing that it is
  processor dependent?
- David said 5.0 didn't help while Mark said between .2.0-2 and 5.0.0-6 it is fixed. Are
  we sure you all talk about the same bug?
  For those that want/can try a new version give the virt-stack from [1] a try, if that
  resolves it for you we can look fox fixes in between those versions.
- David you said "get a security error from windows" can you be more specific about the error
  that you get? That will also help to check if you two are facing the same issue.

[1]: https://launchpad.net/~canonical-server/+archive/ubuntu/server-backports